In the world of homebrewing and craft beer, the choice of packaging is a topic of lively debate.

While the glass bottle remains the historic standard accessible to everyone, the aluminium can has completely won over modern brewers thanks to its exceptional preservation properties.

So, for your next batch, should you stay loyal to glass or make the leap to metal?


1. The aluminium can: The ultimate shield for modern beers

Long shunned and associated with low‑end industrial beers, the can is now the preferred container of cutting‑edge craft breweries — and not without reason:

  • Total protection from light: UV rays are sworn enemies of hops. When exposed to light, they trigger a chemical reaction that gives beer a “skunky” or “sweaty” flavour (the infamous lightstruck taste). A can offers 100% opacity, making it the perfect packaging for highly hopped styles like Hazy IPAs or NEIPAs.
  • Zero oxygen ingress: Unlike a crown cap, which can develop micro‑porosity over time, a can lid is literally crimped and sealed to the aluminium body. This perfect airtightness prevents CO₂ loss and blocks even the smallest oxygen molecule, dramatically extending aroma freshness.
  • Easy transport: Aluminium is far lighter than glass and unbreakable. It’s a major advantage for logistics, storage, and shipping your precious batches.


2. The glass bottle: The timeless champion of accessibility

Despite the rise of aluminium, the traditional bottle still has strong arguments in its favour, especially for homebrewers:

  • An unbeatable budget for beginners: With a simple hand capper and a few crown caps, any new brewer can package their beer for just a few dozen euros.
  • Infinitely reusable: This is the ecological and economic strength of glass. A bottle can be cleaned, sanitised, and reused for dozens of batches — especially swing‑top models, which don’t even require buying closure consumables.
  • The ideal container for ageing: Thick glass withstands very high pressures and is perfect for Belgian styles or strong beers (Stouts, Barleywines) that require months or years of cellar maturation.


3. Comparison table: Bottle vs Can at a glance

To summarise the performance of each format, here is a technical overview of their respective strengths and weaknesses:

Technical criterionGlass bottleAluminium can
UV protection (Light)Partial (Brown glass filters but not 100%)Total (100% opacity)
Oxygen barrierRisk of micro‑porosity via crown capPerfect (Crimped airtight seal)
Equipment investmentVery low (Simple manual capper)High (Requires a can seamer)
ReusabilityYes (Washable and infinitely reusable)No (Single‑use, recyclable only)
Weight & LogisticsHeavy and fragile (Breakage risk)Light, compact, unbreakable
Target beer stylesAgeing beers, Belgian styles, StoutsHazy IPA, NEIPA, highly aromatic styles


4. The downside: Fragility vs equipment investment

Each technical solution comes with its own constraints, which you must anticipate in your brewing space:


Glass bottles: Sensitivity to UV and breakage risks

The main weakness of glass is its permeability. Even though brown glass offers better protection than green or clear glass, it does not filter light completely. Handling glass also always carries a breakage risk, not to mention the labour‑intensive bottle‑by‑bottle cleaning that can quickly become tedious.


Cans: Higher logistics and entry cost

The main drawback of cans lies in the initial investment. Unlike bottles, which can easily be recovered and reused, empty cans must be purchased new (they cannot be reused). More importantly, sealing requires a specific machine (a can seamer), which is significantly more expensive than a simple capper. It’s a choice that requires rethinking your packaging workflow.

Rolling Beers Team Tips

To choose between these two containers, start by considering your favourite beer styles.

If you lean toward ephemeral, hop‑forward, aromatic beers and already have a pressure‑based draft system, cans will offer an extraordinary qualitative leap for your tastings.

On the other hand, if you enjoy brewing traditional styles, ageing beers, or want to keep your budget under control, the glass bottle remains your best ally.