Today I made my first batch of home made soy milk. It was easy and cost a fraction of buying the commercial product. (Besides, I know what I put in it.)
After doing a lot of online research, my process was as follows.
FIRST: Soak 3/4 cup of dried soy beans in 1 quart of water for 10-16 hours. (You can get soy beans from most health food stores. Genesee Natural Foods, Genesee, Pa. for example. www.gnfi.com, or just search for them via Amazon.com)
SECOND: After soaking, drain the beans and heat the beans in the microwave for 2 to 3 minutes. This will reportedly destroy enzymes that cause a “beany” taste.
THIRD: Pure’ the beans with 2 quarts of filtered water in a good blended. (I used a Vitamix).
FOURTH: Strain the mixture through cheese cloth. (I found this was not necessary using the Vitamix because the beans were so emulsified no “okara” (the insoluble material) remained. But if your using a standard blender, you will need to do this.)
FIFTH: Boil the recovered soy-milk after removing the particulates with the cheese cloth. Bring the milk to a boil and boil for 5 to 10 minutes.
SIXTH: Let cool and flavor the milk. A little salt will improve the flavor. Cows milk does contain salt. I also added a little Vanilla Extract and some sweetener to taste.
The result was a very tasty soy milk.