During the cooking process
the soy slurry wants to foam up. To fight this
there are two methods used:
1. Most Soy companies use anti-foaming agents,
chemicals that may not be listed on the list of
ingredients.These
chemicals are either made from ground limestone
and acidified vegetable oil or with calcium
carbonate and animal fats. Silicone defoamers
are the most widely used which has an active
ingredient called diemethyl polysiloxane. Using
defoamers changes the pH of the curds resulting
in a lower quality tofu.
2. We use a constant water spray, we
add no chemicals to the process and the water we use
is filtered to eliminate heavy metals and chlorine
inherent in San Diego water. It is also put
through an ultra violet light, which kills all
bacteria.
The coagulant added to the
soy milk to make Tofu comes in two distinct and
very different forms:
1. Calcium sulfate is the most widely used
chemical in making tofu. Calcium sulfate is a
food grade gypsum, the same chemical that is in
wallboard in your home, plaster of Paris, and
chalk. Using this chalk as a coagulant gives a
higher yield of tofu per quantity of soybeans
used, meaning greater profits for the companies
using it.
2. We use
Nigari. Nigari is derived from seawater and its
chemical name is magnesium chloride. Using
Nigari is not as profitable, but the result is a
much higher grade Tofu, much firmer Tofu and a
much higher protein content.