{"id":17141,"date":"2026-11-04T09:49:09","date_gmt":"2026-11-04T08:49:09","guid":{"rendered":"https:\/\/www.rolling-beers.fr\/info\/?p=17141"},"modified":"2026-11-04T10:25:13","modified_gmt":"2026-11-04T09:25:13","slug":"lachancea-thermotolerans-lalternative-au-kettle-sour","status":"publish","type":"post","link":"https:\/\/www.rolling-beers.fr\/info\/lachancea-thermotolerans-lalternative-au-kettle-sour\/","title":{"rendered":"Lachancea thermotolerans : l&rsquo;alternative au Kettle Sour ?"},"content":{"rendered":"\n<p>Dans l\u2019univers des bi\u00e8res acides, le <em><strong>Kettle Sour<\/strong><\/em> est la m\u00e9thode reine. Cette technique fa\u00e7onne une acidit\u00e9 lactique nette, propre et tr\u00e8s reproductible.<\/p>\n\n\n\n<p>Cependant, elle montre <strong>certaines limites<\/strong> dans le planning d&rsquo;une microbrasserie. Bloquer la cuve d&rsquo;\u00e9bullition 24 \u00e0 48 heures co\u00fbte cher. Maintenir le mo\u00fbt \u00e0 temp\u00e9rature consomme beaucoup d&rsquo;\u00e9nergie, et g\u00e9rer le risque d&rsquo;introduction de bact\u00e9ries lactiques dans l&rsquo;atelier constitue une <strong>contrainte lourde<\/strong> au quotidien.<\/p>\n\n\n\n<p>Une alternative biologique s&rsquo;impose aujourd&rsquo;hui en brasserie : la souche de levure <em><strong>Lachancea thermotolerans<\/strong><\/em> (ex. Philly Sour, Jazz). Longtemps observ\u00e9e avec retenue en raison de retours mitig\u00e9s sur son profil aromatique, cette souche non-<em>Saccharomyces<\/em> s&rsquo;av\u00e8re pourtant \u00eatre un outil de production redoutable lorsqu&rsquo;elle est correctement pilot\u00e9e.<\/p>\n\n\n\n<p><br><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-100-1024x768.jpg\" alt=\"deux sachets de Lachancea thermotolerans, un philly sour de Lallemand et l'autre Jazz de Brewline, levurier fran\u00e7ais.\" class=\"wp-image-17184\" srcset=\"https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-100-1024x768.jpg 1024w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-100-300x225.jpg 300w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-100-768x576.jpg 768w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-100-900x675.jpg 900w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-100-400x300.jpg 400w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-100.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>D&rsquo;o\u00f9 vient <em>Lachancea thermotolerans<\/em> ?<\/h2>\n\n\n\n<p>Longtemps appel\u00e9e <em>Kluyveromyces thermotolerans<\/em>, cette levure non-<em>Saccharomyces<\/em> est naturellement pr\u00e9sente sur la <strong>peau des raisins<\/strong> et dans les mo\u00fbts de vinification. Dans le monde \u0153nologique, elle est r\u00e9put\u00e9e depuis des ann\u00e9es pour r\u00e9\u00e9quilibrer l&rsquo;acidit\u00e9 des vins issus de r\u00e9gions chaudes en produisant naturellement de l&rsquo;acide L-lactique.<\/p>\n\n\n\n<p>C&rsquo;est son profil m\u00e9tabolique unique qui a rapidement \u00e9veill\u00e9 l&rsquo;int\u00e9r\u00eat de la recherche brassicole. Capable de synth\u00e9tiser de l&rsquo;acide lactique tout en assurant la fermentation (jusqu&rsquo;\u00e0 un certain taux d&rsquo;alcool), elle a \u00e9t\u00e9 isol\u00e9e pour offrir aux brasseurs une <strong>alternative biologique in\u00e9dite<\/strong> : acidifier le mo\u00fbt directement en fermenteur, sans recours aux bact\u00e9ries lactiques (<em>Lactobacillus<\/em>) ni blocage de la salle de brassage.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>Lachancea VS Saccharomyces<\/h2>\n\n\n\n<p>Une souche classique de <em>Saccharomyces<\/em> transforme les sucres en \u00e9thanol et en CO2. \u00c0 l&rsquo;inverse, une <em>Lachancea thermotolerans<\/em> oriente une partie du glucose et du fructose vers la synth\u00e8se d&rsquo;acide L-lactique.<br><\/p>\n\n\n\n<ul class=\"wp-block-list rb-list-tech\">\n<li><strong>Le besoin en sucre :<\/strong> La production d&rsquo;acide d\u00e9pend directement des sucres simples disponibles au d\u00e9marrage. Un mo\u00fbt riche en glucose initial produit davantage d&rsquo;acide.<br><br><\/li>\n\n\n\n<li><strong>L&rsquo;astuce du brasseur :<\/strong> Ajoutez 1 \u00e0 2 % de dextrose (ou de sucre simple) par rapport \u00e0 votre masse totale de malts, directement en fin d&rsquo;\u00e9bullition. <br>Cet apport de sucres imm\u00e9diatement assimilables lance l&rsquo;acidification d\u00e8s les premi\u00e8res heures en fermenteur.<\/li>\n<\/ul>\n\n\n\n<p><br>D\u00e8s que le pH cible est atteint (entre 3,2 et 3,8), la synth\u00e8se d&rsquo;acide s&rsquo;arr\u00eate naturellement. Si elle est utilis\u00e9e seule, la fermentation alcoolique d\u00e9bute ensuite normalement.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>Temp\u00e9rature et taux d&rsquo;ensemencement<\/h2>\n\n\n\n<p><em>Lachancea thermotolerans<\/em> exige de la chaleur pour exprimer son potentiel acidifiant. Ne la bridez pas \u00e0 18-20 \u00b0C comme une Ale classique.<br><\/p>\n\n\n\n<ul class=\"wp-block-list rb-list-tech\">\n<li><strong>La temp\u00e9rature id\u00e9ale au pitch :<\/strong> Inoculez votre mo\u00fbt refroidi entre 27 \u00b0C et 28 \u00b0C. Cette fourchette haute maximise la conversion des sucres en acide lactique.<br><br><\/li>\n\n\n\n<li><strong>Le taux d&rsquo;ensemencement :<\/strong> Pr\u00e9voyez un dosage de 50 \u00e0 100 g\/hL pour un mo\u00fbt standard (&lt; 14\u00b0P). Montez \u00e0 100-150 g\/hL pour des densit\u00e9s plus \u00e9lev\u00e9es (&gt; 14\u00b0P) ou des profils plus complexes afin d&rsquo;\u00e9viter tout stress m\u00e9tabolique de la souche.<br><br><\/li>\n\n\n\n<li><strong>Le timing de l&rsquo;acidification :<\/strong> La phase active de production d&rsquo;acide dote le mo\u00fbt de son acidit\u00e9 durant les premi\u00e8res 24 \u00e0 48 heures. Maintenez cette consigne thermique durant toute cette fen\u00eatre.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-99-1024x768.jpg\" alt=\"brasseur pitchant la souche de Lachancea thermotolerans Philly sour\" class=\"wp-image-17187\" srcset=\"https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-99-1024x768.jpg 1024w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-99-300x225.jpg 300w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-99-768x576.jpg 768w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-99-900x675.jpg 900w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-99-400x300.jpg 400w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-99.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>D\u00e9mystifier le profil aromatique de Lachancea thermotolerans<\/h2>\n\n\n\n<p>On reproche parfois \u00e0 <em>Lachancea thermotolerans<\/em> des notes atypiques ou v\u00e9g\u00e9tales. Ces d\u00e9viations proviennent, en r\u00e9alit\u00e9, d&rsquo;un stress m\u00e9tabolique, et non d&rsquo;un d\u00e9faut de la souche.<\/p>\n\n\n\n<p><em>Lachancea<\/em> consomme beaucoup d&rsquo;azote assimilable (YAN) et de micronutriments. Un mo\u00fbt carenc\u00e9 g\u00e9n\u00e8re des sous-produits ind\u00e9sirables.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\ud83d\udca1Astuce :<\/strong> Ajoutez un bio-nutriment riche en zinc comme <strong>Lallemand Servomyces<\/strong> d\u00e8s l&rsquo;ensemencement. Il stimule l&rsquo;activit\u00e9 enzymatique et r\u00e9duit le risque de d\u00e9rive aromatique.<\/p>\n<\/blockquote>\n\n\n\n<p>Une nutrition adapt\u00e9e et un profil thermique ma\u00eetris\u00e9 garantissent une acidit\u00e9 nette, bord\u00e9e d&rsquo;\u00e9l\u00e9gantes notes d&rsquo;agrumes et de fruits \u00e0 p\u00e9pins.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-1 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.rolling-beers.fr\/pro\/fr\/enzymes-brassage-professionnel\/5913-lallemand-servomyces-500g.html\" style=\"background-color:#6aa4c6\" target=\"_blank\" rel=\"noreferrer noopener\">Nutriment Lallemand Servomyces<\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>Les protocoles d&rsquo;inoculation en brasserie<\/h2>\n\n\n\n<p>Plusieurs options s&rsquo;offrent \u00e0 vous pour piloter l&rsquo;acidification et l&rsquo;att\u00e9nuation selon vos contraintes de production :<\/p>\n\n\n\n<ul class=\"wp-block-list rb-list-tech\">\n<li><strong>Le pitch s\u00e9quentiel (Recommand\u00e9) :<\/strong> Inoculez <em>Lachancea thermotolerans<\/em> seule \u00e0 27-28 \u00b0C. Attendez l&rsquo;obtention du pH vis\u00e9 (24 \u00e0 48h). Baissez la temp\u00e9rature (18-22\u00b0C), puis ajoutez une souche de finition neutre (<em>US-05<\/em>, <em>K-97<\/em> ou \u00e9quivalent) pour consommer le maltose r\u00e9siduel.<br><br><\/li>\n\n\n\n<li><strong>Le co-pitch simultan\u00e9 :<\/strong> Ensemencez <em>Lachancea<\/em> et votre <em>Saccharomyces<\/em> ensemble d\u00e8s le d\u00e9part \u00e0 27-28 \u00b0C. Redescendez la consigne thermique \u00e0 20 \u00b0C apr\u00e8s 48h. Moins pr\u00e9cis sur le contr\u00f4le strict du pH final, mais id\u00e9al pour gagner du temps en cave.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:18px\"><br>Et pour contr\u00f4ler l&rsquo;acidit\u00e9 ?<\/h3>\n\n\n\n<p>L&rsquo;intensit\u00e9 de l&rsquo;acidification d\u00e9pend de la quantit\u00e9 de sucres simples (glucose\/fructose) consomm\u00e9s durant les premi\u00e8res 24 \u00e0 48 heures. La souche produit g\u00e9n\u00e9ralement entre 3 et 5 g\/L d&rsquo;acide L-lactique, faisant descendre le pH dans une plage globale de <strong>3,2 \u00e0 3,8<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list rb-list-tech\">\n<li><strong>Le mat\u00e9riel de contr\u00f4le :<\/strong> Ne vous fiez pas au timing \u00e0 l&rsquo;aveugle. Suivez la courbe d&rsquo;acidification au pH-m\u00e8tre calibr\u00e9 d\u00e8s la 12e heure post-pitching, avec des prises de mesure toutes les 6 \u00e0 12 heures.<br><br><\/li>\n\n\n\n<li><strong>Comment stopper l&rsquo;acidification au pH cible ?<\/strong> Si vous atteignez votre pH souhait\u00e9 avant la fin du travail de la souche, abaissez la temp\u00e9rature du fermenteur sous 18-20 \u00b0C ou pitchez la levure de finition (<em>Saccharomyces<\/em>). La concurrence sur les sucres et la baisse thermique stoppent la synth\u00e8se d&rsquo;acide lactique.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:28px\"><br>Et le 100 % <em>Lachancea<\/em> thermotolerans : possible ou d\u00e9conseill\u00e9 ?<\/h3>\n\n\n\n<p>Une grande partie des critiques aromatiques formul\u00e9es \u00e0 l&rsquo;encontre de <em>Lachancea thermotolerans<\/em> provient d&rsquo;un usage en monoculture mal ma\u00eetris\u00e9. Pourtant, l&rsquo;ensemencement \u00e0 100 % reste tout \u00e0 fait envisageable sous conditions.<\/p>\n\n\n\n<ul class=\"wp-block-list rb-list-tech\">\n<li><strong>Quand c&rsquo;est possible (faible ABV) :<\/strong> Sur un Berliner Weisse l\u00e9ger (3,5 \u00e0 4 % d&rsquo;alcool), la monoculture fonctionne tr\u00e8s bien. La faible densit\u00e9 initiale ne sature pas la levure, ce qui simplifie grandement la gestion.<br><br><\/li>\n\n\n\n<li><strong>Les limites sur des densit\u00e9s plus hautes :<\/strong> Sur des recettes plus charg\u00e9es en alcool ou en sucres non fermentescibles (Pastry Sour, Sour IPA&#8230;) la monoculture pose deux probl\u00e8mes majeurs :<br><br>\n<ul class=\"wp-block-list\">\n<li><em>Une att\u00e9nuation incompl\u00e8te :<\/em> La levure assimile tr\u00e8s mal le maltotriose. Elle s&rsquo;arr\u00eate trop t\u00f4t, donne de faux go\u00fbts et laisse un corps lourd et sucr\u00e9.<br><br><\/li>\n\n\n\n<li><em>Une sensibilit\u00e9 \u00e0 l&rsquo;alcool :<\/em> Sa tol\u00e9rance sature rapidement au-del\u00e0 de 5 \u00e0 6 % ABV.<br><br><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\ud83d\udca1 <strong>\u00c0 lire aussi sur le blog :<\/strong> <em><a href=\"https:\/\/www.rolling-beers.fr\/info\/dip-hopping-comment-sublimer-vos-aromes-de-houblon\/\">Dip Hopping : comment sublimer vos ar\u00f4mes de houblon ?<\/a><\/em> Extrayez des ar\u00f4mes nets et limitez les d\u00e9rives v\u00e9g\u00e9tales d\u00e8s le remplissage du fermenteur.<\/p>\n<\/blockquote>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>Kettle Sour vs pitch direct<\/h2>\n\n\n\n<table style=\"width: 100%; border-collapse: collapse; margin-top: 20px; margin-bottom: 20px; font-family: sans-serif; font-size: 14px;\">\n  <thead>\n    <tr style=\"background-color: #ffcc00; color: #000; text-align: left;\">\n      <th style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold;\">Param\u00e8tre<\/th>\n      <th style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold;\">Kettle Sour traditionnel<\/th>\n      <th style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold;\">Fermentation directe (Lachancea)<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold; background-color: #f9f9f9;\">Occupation cuve \u00e9bullition<\/td>\n      <td style=\"padding: 12px; border: 1px solid #ddd;\">24 \u00e0 48 h bloqu\u00e9es<\/td>\n      <td style=\"padding: 12px; border: 1px solid #ddd;\">Z\u00e9ro temps mort (transfert direct)<\/td>\n    <\/tr>\n    <tr>\n      <td style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold; background-color: #f9f9f9;\">Impact \u00e9nerg\u00e9tique<\/td>\n      <td style=\"padding: 12px; border: 1px solid #ddd;\">\u00c9lev\u00e9 (maintien \u00e0 38\u201345 \u00b0C)<\/td>\n      <td style=\"padding: 12px; border: 1px solid #ddd;\">Nul (pic thermique g\u00e9r\u00e9 en fermenteur)<\/td>\n    <\/tr>\n    <tr>\n      <td style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold; background-color: #f9f9f9;\">S\u00e9curit\u00e9 sanitaire<\/td>\n      <td style=\"padding: 12px; border: 1px solid #ddd;\">Risque d&rsquo;infection des autres bi\u00e8res (Lactobacillus)<\/td>\n      <td style=\"padding: 12px; border: 1px solid #ddd;\">Nul (levure pure, z\u00e9ro bact\u00e9rie)<\/td>\n    <\/tr>\n    <tr>\n      <td style=\"padding: 12px; border: 1px solid #ddd; font-weight: bold; background-color: #f9f9f9;\">Tol\u00e9rance amertume<\/td>\n      <td style=\"padding: 12px; border: 1px solid #ddd;\">Tr\u00e8s faible (< 5\u20138 IBU)<\/td>\n      <td style=\"padding: 12px; border: 1px solid #ddd;\">\u00c9lev\u00e9e (supporte 15\u201320 IBU au brassage)<\/td>\n    <\/tr>\n    <tr>\n  <\/tbody>\n<\/table>\n\n\n\n<p><\/p>\n\n\n\n<p>\u26a0\ufe0f <strong>Avertissement Process :<\/strong> <em>Lachancea thermotolerans<\/em> tol\u00e8re mieux le houblonnage \u00e0 chaud que les bact\u00e9ries lactiques. Conservez toutefois l&rsquo;amertume sous les 15 \u00e0 20 IBU pour pr\u00e9server la fra\u00eecheur de l&rsquo;acidit\u00e9.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><br>\ud83d\udca1 <strong>\u00c0 lire aussi sur le blog :<\/strong> <em><a href=\"https:\/\/www.rolling-beers.fr\/info\/nettoyage-cip-tout-ce-quil-faut-savoir-pour-bien-demarrer\/\">Nettoyage CIP : tout savoir pour bien d\u00e9marrer<\/a><\/em>. La gestion des co-fermentations exige une hygi\u00e8ne rigoureuse. Revoyez les fondamentaux du nettoyage en place.<\/p>\n<\/blockquote>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>FAQ : Lachancea thermotolerans en brasserie<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:18px\">Qu&rsquo;est-ce que Lachancea thermotolerans ?<\/h3>\n\n\n\n<p><em>Lachancea thermotolerans<\/em> est une levure non-<em>Saccharomyces<\/em> capable de produire simultan\u00e9ment de l&rsquo;alcool et de l&rsquo;acide lactique durant la fermentation. Elle permet d&rsquo;obtenir des bi\u00e8res acides sans utiliser de bact\u00e9ries lactiques.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:18px\"><br>Quelle diff\u00e9rence entre un Kettle Sour et une fermentation avec <em>Lachancea thermotolerans<\/em> (Philly Sour, Jazz) ?<\/h3>\n\n\n\n<p>Le Kettle Sour repose sur une acidification du mo\u00fbt avant l&rsquo;\u00e9bullition gr\u00e2ce \u00e0 des bact\u00e9ries lactiques. Avec une souche de <em>Lachancea thermotolerans<\/em> comme Philly Sour ou Jazz, l&rsquo;acidification se produit directement en fermenteur pendant la fermentation alcoolique.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:18px\"><br>Quel pH peut atteindre une <em>Lachancea thermotolerans<\/em> ?<\/h3>\n\n\n\n<p>Selon la recette, le taux d&rsquo;ensemencement, la temp\u00e9rature de fermentation et la disponibilit\u00e9 en sucres simples, Philly Sour permet g\u00e9n\u00e9ralement d&rsquo;atteindre un pH compris entre 3,2 et 3,8.<\/p>\n\n\n\n<p><strong>\u00c0 titre indicatif :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list rb-list-tech\">\n<li>pH 3,8 : acidit\u00e9 l\u00e9g\u00e8re et rafra\u00eechissante<\/li>\n\n\n\n<li>pH 3,5 : acidit\u00e9 bien marqu\u00e9e<\/li>\n\n\n\n<li>pH 3,2 : acidit\u00e9 vive et intense<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:18px\"><br>Peut-on utiliser Philly Sour ou Jazz seules ?<\/h3>\n\n\n\n<p>Oui. Une fermentation 100 % <em>Lachancea thermotolerans<\/em> fonctionne sur les bi\u00e8res l\u00e9g\u00e8res, comme une Berliner Weisse.<\/p>\n\n\n\n<p>Pour des bi\u00e8res plus alcoolis\u00e9es ou des recettes riches en sucres r\u00e9siduels, de nombreux brasseurs pr\u00e9f\u00e8rent un ensemencement s\u00e9quentiel avec une souche de <em>Saccharomyces<\/em> afin d&rsquo;am\u00e9liorer l&rsquo;att\u00e9nuation finale.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:18px\"><br>\u00c0 quelle temp\u00e9rature travailler une <em>Lachancea thermotolerans<\/em> ?<\/h3>\n\n\n\n<p>Viser une temp\u00e9rature comprise entre 26\u00b0C et 28\u00b0C est id\u00e9al pour produire une acidit\u00e9 propre.<\/p>\n\n\n\n<p><br><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-98-1024x768.jpg\" alt=\"brasseur prenant un \u00e9chantillon de bi\u00e8re depuis le fermenteur\" class=\"wp-image-17189\" srcset=\"https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-98-1024x768.jpg 1024w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-98-300x225.jpg 300w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-98-768x576.jpg 768w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-98-900x675.jpg 900w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-98-400x300.jpg 400w, https:\/\/www.rolling-beers.fr\/info\/wp-content\/uploads\/2026\/11\/brassez-en-ete-600-x-400-px-800-x-600-px-98.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>Optimisez votre acidification avec les bons intrants<\/h2>\n\n\n\n<p>S\u00e9curisez vos brassins acides gr\u00e2ce aux r\u00e9f\u00e9rences incontournables de notre catalogue pro :<\/p>\n\n\n\n<ul class=\"wp-block-list rb-list-tech\">\n<li><strong><a href=\"https:\/\/www.rolling-beers.fr\/pro\/fr\/levures-seches-professionnel\/5925-lallemand-wildbrew-philly-sour-500g.html\" target=\"_blank\" rel=\"noreferrer noopener\">Levure S\u00e8che Lallemand WildBrew Philly Sour (500g)<\/a> :<\/strong> La r\u00e9f\u00e9rence historique des souches de <em>Lachancea thermotolerans<\/em>. Elle produit une acidit\u00e9 nette et des notes fruit\u00e9es tr\u00e8s propres.<br><br><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.rolling-beers.fr\/pro\/fr\/levures-seches-professionnel\/10728-brewline-jazz-sour-500g.html\" target=\"_blank\" rel=\"noreferrer noopener\">Levure S\u00e8che Brewline Jazz Sour (500g)<\/a> :<\/strong> Une excellente alternative professionnelle sign\u00e9e Brewline. Elle offre une grande r\u00e9gularit\u00e9 d&rsquo;acidification sur les grands volumes.<br><br><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.rolling-beers.fr\/pro\/fr\/enzymes-brassage-professionnel\/5913-lallemand-servomyces-500g.html\" target=\"_blank\" rel=\"noreferrer noopener\">Bio-nutriment Lallemand Servomyces (500g)<\/a> :<\/strong> L&rsquo;enrichissement biologique id\u00e9al pour doper la levure en zinc et \u00e9viter tout stress m\u00e9tabolique.<br><br><\/li>\n\n\n\n<li><strong>Conseil d&rsquo;utilisation :<\/strong> Associez un boost de sucre \u00e0 l&rsquo;\u00e9bullition (1-2 %), un apport de Servomyces et un pitch \u00e0 27-28 \u00b0C.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\"><br>En r\u00e9sum\u00e9<\/h2>\n\n\n\n<p>Si le <em>Kettle Sour<\/em> reste ind\u00e9tr\u00f4nable, la fermentation directe par <em>Lachancea thermotolerans<\/em> s&rsquo;impose comme une <strong>alternative moderne<\/strong>, \u00e9conomique et s\u00fbre. <\/p>\n\n\n\n<p>En monoculture sur des bi\u00e8res l\u00e9g\u00e8res ou en s\u00e9quentiel sur des profils denses, cette souche vous fait gagner du temps, diminue les risques d&rsquo;infection et r\u00e9duit votre facture \u00e9nerg\u00e9tique.<\/p>\n\n\n\n<p>Diversifiez votre gamme de bi\u00e8res acides rapidement et avec r\u00e9gularit\u00e9 !<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"font-size:22px\"><br>Besoin d\u2019aide pour calibrer vos apports en nutriments ? <\/h3>\n\n\n\n<p>\ud83d\udc49 Consultez notre <a href=\"https:\/\/www.rolling-beers.fr\/pro\/fr\/56-levures-seches-professionnel?type-de-levure=hybride\" target=\"_blank\" rel=\"noreferrer noopener\">catalogue de levures<\/a> et nutriments pour brasseries<\/p>\n\n\n\n<p>\ud83d\udc49 Contactez notre \u00e9quipe pour un conseil ou un devis : support@rolling-beers.fr<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-2 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.rolling-beers.fr\/pro\/fr\/levures-seches-professionnel\/5925-lallemand-wildbrew-philly-sour-500g.html\" style=\"background-color:#6aa4c6\" target=\"_blank\" rel=\"noreferrer noopener\">Achetez Lallemand Philly Sour 500g <\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Dans l\u2019univers des bi\u00e8res acides, le Kettle Sour est la m\u00e9thode reine. Cette technique fa\u00e7onne une acidit\u00e9 lactique nette, propre et tr\u00e8s reproductible. Cependant, elle montre certaines limites dans le planning d&rsquo;une microbrasserie. Bloquer la cuve d&rsquo;\u00e9bullition 24 \u00e0 48 heures co\u00fbte cher. Maintenir le mo\u00fbt \u00e0 temp\u00e9rature consomme beaucoup d&rsquo;\u00e9nergie, et g\u00e9rer le risque &hellip; <\/p>\n","protected":false},"author":4,"featured_media":17183,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[176],"tags":[],"class_list":["post-17141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pro"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Lachancea thermotolerans : l&#039;alternative au Kettle Sour ?<\/title>\n<meta name=\"description\" content=\"Optimisez vos brassins acides. 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