For those of you that keg your homebrew, chances are you’ve got at least one Cornelius keg sitting empty at any given time. Why not put them to good use as primary and/or secondary fermenters? And for those that don’t keg but are considering it in the future, picking up a keg or two for fermenting is a great way to start building up the equipment you’ll need for a kegerator. Used Cornelius kegs cost about $30 to $40, and with about $10 more in fittings and tubing you can have a 5-gallon (19-L) stainless steel fermenting vessel. The advantages of using a keg are that it’s light-tight, has built-in handles for easy transport and if you have a kegerator you can use your CO2 system to rack the beer in a completely closed environment with no siphoning.