Liquid Yeast YF 103 – Steamprunk 100 mL

YF 103 Steamprunk Liquid Yeast — British‑style yeast designed for modern hopped beers such as New England IPA. It transforms hop‑derived geraniol into aromatic terpenes, revealing notes of peach, citrus, and tropical fruits. Its smooth fermentation produces a creamy texture and moderate haze, typical of NEIPA. Tolerant to slightly higher temperatures, it remains stable and efficient even under home‑brewing conditions.

Why choose this product?

• Vibrant, fruity aroma profile, ideal for modern hopped beers.
• Consistent and reliable fermentation, even in home‑brewing setups.
• Convenient 100 mL format, ready to use for a standard batch (gravity ≤ 1.055).

Technical characteristics

• Strain: Saccharomyces cerevisiae
• Fermentation type: Ale
• Origin: British
• Attenuation: 71–75 %
• Flocculation: High
• Optimal temperature: 18–23 °C
• Tolerated ABV: up to 10 %
• Recommended styles: NEIPA, Bitter, IPA
• Format: 100 mL
• Content: > 100 billion viable cells
• Equivalent to: 11 g dry yeast packet
• Suitable for: 20–25 L batches (gravity ≤ 1.055)
• Storage: 2–5 °C, up to 4 months
• Nutrients or starters not included

Rolling Beers Tips

• Remove the vial from the fridge on brew day and let it reach room temperature.
• Shake well before pitching to homogenize the suspension.
• Properly oxygenate the wort — essential for liquid yeast vitality.
• For strong beers (> 1.065), prepare a starter or double the dose.

Product FAQ

• Should I prepare a starter? Not for standard 20–25 L batches, but recommended for high gravity worts.
• Can it be stored for several months? Yes, up to 4 months at 2–5 °C in its sealed package.
• Is it comparable to dry yeast? Yes, a 100 mL vial equals an 11 g dry yeast packet.