New answers tagged oxidation
Because that's not how gasses work. :) Gasses in a space, especially under pressure, are going to come into an equilibrium, a homogeneous combination. While during active fermentation, or for a brief period of time after off-gassing CO₂ the (heavier) CO₂ will form some sort of layer/"barrier" on top of the beer, after time or once pressurized, that will not ...
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