This soy milk recipe is intended to be used for soy sizing fabric and for mixing with natural pigments in the katazome process.
1. Put a handful (i.e. 1/4 - 1/3 cup) of dry soybeans in water to soak over night in the refrigerator. Will double in size (approx.); skins should not be wrinkled; when they have swelled to their full size, the wrinkles disappear.
2. Rinse fully swelled soy beans in strainer.
3. Put in blender with approx. 3 c. cold water. Blend for about a minute.
4. Drape a damp cloth, i.e. cotton muslin, about 18” square, over a bowl. Pour the pulverized soybean liquid into the middle of the cloth in the bowl. Gather the edges of the cloth together and squeeze the liquid through the cloth into the bowl.
5. Transfer the soy milk into a container for pouring.
6. Scrape the solids back into the blender; Add another cup or two of water; blend again, Strain through the cloth again; Combine these two liquids; Toss the soy bean solids into the compost.
This liquid soy milk is good for sizing cloth and for mixing with pigments. It's best to make this up fresh the day you intend to use it because is sours rather quickly. NOTE: You may freeze the soaked, strained beans, but do not freeze the soy milk.