Curdled Milk Barrel Fluid Ratio Output.

Its a bug either case, up to you if you want to accept my solution tho since it affects gameplay balance.

Bug: Curdled Milk Recipe = Any Milk + Bucket of Vinegar = 10 buckets of milk

My Solution: Any Milk + Bucket of Vinegar = Milk Quantity * 1.11 Curdled Milk ( based on recipe ratio )