Does one have to take maaser from soy milk

Even according to those who hold that terumos and maasros have to be separated from soybean oil, it’s not necessary to separate terumos and maasros from soy milk (which in Eretz Yisrael is anyhow made from soybeans grown in Chutz La’aretz), for two reasons:

  1. The milk isn’t extracted from the soybean itself, rather it’s water in which the soybeans have been soaked after grinding.
  2. The method of making soymilk is not considered g’mar meleches hapri [the final stage of preparing the food for market], rather it’s considered a stage in the process of making the bean edible. This step, when done in Eretz Yisrael from produce grown in Chutz La’aretz, does not require terumos and maasros.