How much liquid goes in the thumper keg?
- How much liquid goes in the thumper keg?
You need to put some kind of liquid in the thump keg filling it about 1/4 full. The options are: left over mash, tails from a previous run, etc. But if you want the thumper to do what it is supposed to do (increase the alcohol % in the final product), there needs to be some kind of alcohol in the thumper.