Ahhh! Calcium Sulfate! A naturally occurring mineral also known as gypsum.
Calcium Sulfate is a great choice for making a firm, homemade tofu. It makes the soymilk start to solidify, so that you can press it into a block. It actually adds calcium too. For those seeking more tender tofu, we suggest Nigari Flakes.
Did we mention that calcium sulfate is also the most popular coagulant used in the store bought versions of tofu? That's right. You're going to be making tofu like a pro. For home tofu making purposes, we suggest starting with approximately 1 tsp. for each quart of soy milk.