Most teriyaki sauce contains gluten. The primary source is soy sauce, one of the base ingredients in every traditional teriyaki recipe, which is brewed with wheat as a core component. Unless a teriyaki sauce is specifically labeled gluten-free, you should assume it contains gluten.
Why Standard Teriyaki Sauce Contains Gluten
Traditional teriyaki sauce is built on four ingredients: soy sauce, mirin, sugar, and sake. Westernized versions often add honey, garlic, and ginger. The gluten problem starts with the soy sauce. Conventional soy sauce is made from just four ingredients: water, soybeans, wheat, and salt. Wheat is essential to the fermentation process that gives soy sauce its sharp, complex flavor, and it’s present in significant amounts.
Kikkoman’s teriyaki glaze, one of the most widely sold commercial versions, lists its ingredients starting with soy sauce made from water, soybeans, wheat, and salt. The label explicitly flags wheat, soybeans, and gluten as allergens. This isn’t unique to Kikkoman. Nearly every major brand of teriyaki sauce on grocery shelves uses standard wheat-containing soy sauce.
Some commercial teriyaki sauces add a second potential gluten source: wheat flour as a thickener. While cornstarch is the more common thickening agent, cheaper or restaurant-style versions sometimes use flour instead. This makes reading the label even more important if you’re avoiding gluten.
How to Find Gluten-Free Teriyaki Sauce
Gluten-free teriyaki sauce exists, but it requires a swap at the foundation level, replacing the soy sauce with something wheat-free. The two main alternatives are tamari and coconut aminos.
Tamari is a Japanese soy sauce traditionally made without wheat. It has a higher concentration of soybeans, which gives it a richer, smoother, slightly thicker flavor compared to the sharper, saltier taste of regular soy sauce. Most tamari is naturally gluten-free, but not all of it. Some brands do include small amounts of wheat, so you still need to check the label for a gluten-free designation.
Coconut aminos is the other popular option. It’s made from coconut sap rather than soybeans, so it’s free of both wheat and soy. The flavor is milder and slightly sweeter than soy sauce, which changes the taste profile of the finished teriyaki, but many people with celiac disease or gluten sensitivity find it a reliable substitute.
A few brands now sell bottled teriyaki sauce specifically labeled gluten-free, typically using tamari or gluten-free soy sauce (brewed with rice instead of wheat) as the base. In the U.S., any product labeled “gluten-free” must contain less than 20 parts per million of gluten under FDA regulations. That threshold applies to fermented products like soy sauce as well.
Making Your Own at Home
The simplest way to guarantee a gluten-free teriyaki is to make it yourself. The recipe is straightforward: combine gluten-free tamari or coconut aminos with mirin, sugar, and a splash of rice vinegar. If you want it thicker, a cornstarch slurry (cornstarch mixed with cold water) works perfectly as a gluten-free thickener. The whole process takes about ten minutes on the stove.
This also lets you control the sodium and sugar levels, which tend to run high in bottled versions.
Ordering Teriyaki at Restaurants
Restaurant teriyaki is almost certainly not gluten-free unless the menu explicitly says so. Most kitchens use standard soy sauce, and many add flour-based thickeners to their house teriyaki. Even restaurants that offer a gluten-free option may pose cross-contamination risks.
Research on gluten cross-contamination in restaurant kitchens shows that shared cooking equipment can transfer meaningful amounts of gluten. A study testing French fries from shared fryers found that 25% of orders could not be considered gluten-free, with some samples exceeding 80 ppm of gluten, well above the 20 ppm safety threshold. Shared condiment containers and cooking surfaces carry similar risks. Shared utensils like spoons and ladles, on the other hand, generally did not produce significant contamination levels in controlled experiments.
If you have celiac disease, the safest approach is to ask whether the restaurant uses a dedicated gluten-free teriyaki sauce, whether it’s prepared separately from wheat-containing sauces, and whether the cooking surface is shared. Many teriyaki-focused restaurants prepare large batches of sauce in advance, which means they’re unlikely to make a separate gluten-free batch on request.
What to Look for on the Label
When buying bottled teriyaki sauce, check the ingredients list for wheat in any form. It most commonly appears inside the soy sauce sub-ingredients (listed in parentheses) but can also show up as wheat flour or wheat starch used for thickening. U.S. food labeling laws require wheat to be declared in a “Contains” statement near the ingredients, making it relatively easy to spot.
A “gluten-free” label on the front of the bottle is the most reliable shortcut. Without that label, assume the sauce contains gluten, even if the front of the bottle doesn’t mention wheat. Some brands marketed as “reduced sodium” or “organic” still use standard wheat-containing soy sauce as their base.