My homebrew club brewed 11 batches of NB imperial stout with specialty grains. We let ferment for 2 weeks then put into secondary. We just racked from secondary to the bourbon barrel and we are still about 2 gallons shy of filling the barrel up. So we tried as much to fill the barrel up with CO2, but we are still a little worried about the airspace left.
I have just made another batch as I was considering filling the barrel as full as possible. Now I am second guessing. I don't want to keep opening up the barrel and expose to O2. What should I do gize?
Bourbon Barrel is from Wild Turkey.