Is Soy Sauce Gluten Free? (Plus the Best Safe Alternatives)
If you’ve recently gone gluten-free, soy sauce is probably one of the first things that caught you off guard. It’s in everything — stir fries, marinades, sushi restaurants, salad dressings — and yet most traditional soy sauce contains wheat as a primary ingredient.
So is soy sauce gluten free? The short answer: no, most soy sauce is not gluten free. But the good news is there are some excellent alternatives that taste just as good, and once you know what to look for, navigating this is easy.
Why Is Regular Soy Sauce Not Gluten Free?
Traditional soy sauce is made by fermenting a mixture of soybeans and wheat together. The wheat is a core part of the fermentation process — which means even small amounts can cause a reaction for people with celiac disease or gluten sensitivity. Brands like Kikkoman and La Choy (regular versions) both contain wheat.
The Best Gluten-Free Soy Sauce Alternatives
1. Tamari
Tamari is the closest thing to soy sauce in taste and texture. It’s a Japanese-style soy sauce traditionally made with little or no wheat. My go-to is San-J Tamari — certified gluten free, widely available, and tastes almost identical to regular soy sauce.
2. Coconut Aminos
Made from fermented coconut sap, coconut aminos is naturally soy-free and gluten free. It’s slightly sweeter and less salty than soy sauce — great for dressings and marinades. Coconut Secret Coconut Aminos is the brand I recommend most.
3. Labelled Gluten-Free Soy Sauce
Some brands now make a certified gluten-free version of their regular soy sauce. Kikkoman has a gluten-free soy sauce made without wheat. Just make sure the bottle specifically says “gluten free.”
What About Soy Sauce at Restaurants?
Most restaurants use standard soy sauce with wheat. When eating out at sushi restaurants or Asian cuisine, always ask specifically what soy sauce they use. Some people bring their own tamari packets — San-J makes individual travel-size packets that are perfect for this.
Other Hidden Sources of Gluten to Watch For
Soy sauce is just one of many surprising places gluten hides. I put together a complete reference guide covering everything: The GF Cheat Sheet — a quick-reference guide to hidden gluten sources I wish I’d had when I started.
The Bottom Line
Most soy sauce contains wheat and is not gluten free. Your safest options are certified gluten-free tamari, coconut aminos, or a specifically labelled gluten-free soy sauce. Keep a bottle of tamari in your kitchen and you’ll never miss regular soy sauce.