Last night I racked a black saison into secondary, pitched Brett Lambicus, added oak, and some of my favorite dregs. I thought I had three gallons of beer, but in actuality only had two (don't ask why!)
I racked the beer into the only fermenter I had: a three gallon better bottle carboy. But I'm a tad concerned about all the head space and getting too much oxygen into the beer.
I do have a two gallon glass jar. The beer would fit in there, and I could then tighten the lid. However, I'm nervous about re-racking the beer, and I don't particularly like the idea of an air-tight lid on a glass jar; even though all my brett-in-secondary beers have had very little visible fermentation activity, I still think I could wind up with an explosion.
What do people think? Should I leave it in the 3 gallon and not worry about it? Should I transfer to the 2 gallon jar? Or should I order a proper 2-gallon carboy and transfer whenever it finally arrives?