<<Disclaimer: Verify this information before applying it to your situation.>>
Niko,
Instead of soy sauce you can use BRAGG Liquid aminos. It is made from
soybeans, taste like soy sauce and is not fermented, and has amino
acids. Ingredients are formulated vegetable protein from pure soybeans
and purified water only. contains no alcohol, no additives and no
chemicals. This product is Kosher Certified.
Fran