I found this recipe but had a question: Recipe for milk replacer: *1 gallon whole milk *1 cup whole buttermilk (not low fat) *12 oz. can evaporated milk. Pour off 2 1/2 cups of the whole milk and add 1 cup whole buttermilk and one 12 oz can of evaporated milk to the whole milk. Mix well. Is that to pour out 2 1/2 cups from the gallon of milk? And then mix the other ingredients into the gallon? And mix that? Am I reading that correctly? Thanks!