Post by Steve BoninePost by Ed Edelenbos iPadIt depends on what you call a growler. Some have screw tops and some
have swing tops. The swing top type are fine to carbonate in. Some of
the screw top ones I've seen don't seem to be strong enough (the caps
themselves).
I thought that the definition of "growler" was a container that would
maintain carbonation. Using this definition, I see no problem with
carbonating in one, other than finding out that it wasn't strong enough
would be a traumatic event.
I have a few bale wire top growlers so I can take my home brewed ale or
mead to social group meetings. The strong seal is needed to keep
carbonation for the ale, but I go directly from the primary fermenter to
the growler and prime it. The cool looking design helps for the mead.
Several local brewpubs sell growlers of ale that look a lot more like
cider jugs with screw on caps. These will hold the carbonation but only
for a short time. They are fine for taking ale to go, keeping it in the
fridge until tomorrow, and finishing the ale the next day.
Time scale matters for what it means to hold carbonation.