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What it is and what sets it apart: Differs from a fully sealed pack—fresh roast needs to vent. Not eternal anti-age magic.
How it is done: Roast → pack with valve → CO₂ pushes out → minimise open time → store well.
Flavours and cup benefits: Prevents ballooning and helps seals; relative freshness. Allows packing soon after roast.
Technical notes: Valve ≠ recent date or whole bean. Dirty/saturated valves lose function.
Common mistakes: Do not treat the valve as 6-month freshness. Do not puncture the bag “to breathe more”.
In Cafesito
Save coffees to your pantry, brew with method and keep your diary.