I think a larger concern may be loss of carbonation. With all the available headspace, the beer will continue to lose carbonation until the pressure balances out.
But the CO2 will remain in the beer until opened, won't it? I assume a half growler at a party will be gone before it can lose carb.
Some definitely will. But won't the CO2 in the beer dissipate until the headspace of the growler is at the same pressure as the beer itself? I actually don't know if this will be a considerable amount or not. Just meant it would be a larger concern for me than oxidation.
Your beer requires 11-12 PSIG to hold propose carbonation in the fridge. When you fill a growler the headspace will be at 0 PSIG. Presumably you will put it back in the fridge with a closed lid for 6 hours. During that time the carbonation in the beer will escape into the headspace and try to reach equilibrium. But, practically speaking this process takes hours.
This weekend I bottled beer from the keg. The last bottle was only half full when the keg kicked. I capped it and left it to drink that night. I bottled at 7:30am and came back to drink it that evening. It was noticeably less carbonated than normal but it was still “half” carbonated and it drank fine.
Topic: How long does it take for oxidation to occur? (Read 2025 times)
