I use low fat milk with acidophilus added with 10 parts rainwater as foliar to rid and prevent powdery mildew.Using milk on your compost and in your garden will probably come as a surprise to most. Upon closer inspection, however, it starts to make sense. The amino acids, proteins, enzymes and natural sugars that make milk a food for humans and animals are the same ingredients in nurturing healthy communities of microbes, fungi and beneficial bacteria in your compost and garden soil.
read more http://www.motherearthnews.com/organic-gardening/milk-and-molasses-magic-zbcz1402.aspx#axzz2w0dnplCV
Then what I don't drink that spoils goes to compost.