Tested on minecraft version 1.12.2 and the lastest version of binnie's mod (2.5.1.203) Losses 1 bucket of liquid whenever it is brewed with more then 1 bucket of liquid in it. Whenever the brewing process starts if a recicpe calls for 1,000mb of a juice and only 1,000 is in it takes the 1000 and makes the full product, however if 2+ buckets are in all 2000mb are taken out at the time of the brewing process starting with the final output being the same.