Today I tried making soymilk for the first time and it turned out
green! I followed the recipe from the Soy, Not Oi cook zine. What went
wrong? Is it because I used frozen soybeans or it is just that some
pulp spilt into the milk? Is it because I used guaze instead of
cheesebloth? The recipe says "you can use cheesecloth or anything with
small holes."
The book says you can eat the pulp too.

http://www.inetworld.net/thrill/