Tamari

Japan’s soy sauce, distinct from Chinese

Tamari is the traditional Japanese soy sauce, distinct from the more globally-known Chinese-influenced shoyu (also called Japanese-style soy sauce) commonly found in supermarkets.

Key differences:

• Tamari — little or no wheat; richer, less salty; more soybean flavor
• Shoyu/Chinese soy sauce — significant wheat content; saltier, sharper; thinner consistency

Tamari is the older Japanese tradition, predating Chinese-style shoyu in Japanese cuisine by centuries. Chinese-style soy sauce arrived during cultural exchanges and largely displaced tamari for everyday use, though tamari remains the traditional sauce for sushi, sashimi, and other delicate Japanese preparations.

A miso byproduct

Tamari originated as the liquid byproduct of miso production — when traditional miso ferments, a dark concentrated liquid pools at the top, which was historically collected and used as a savory sauce.

The traditional method involves:

1. Soybeans cooked and mashed
2. Inoculated with koji (Aspergillus oryzae mold)
3. Mixed with salt water
4. Aged in cedar barrels for 6 months to 2+ years
5. The liquid that develops is tamari

Modern commercial tamari is often produced as a dedicated product rather than as a miso byproduct, but the traditional connection remains in some artisanal Japanese makers.

Gluten-free naturally

Because tamari traditionally contains little or no wheat, it’s naturally suitable for many gluten-free diets. This has made tamari particularly popular in:

• Health food stores and natural foods markets
• Gluten-free restaurants and cookbooks
• Celiac disease and gluten sensitivity diets
• Whole-food and macrobiotic dietary traditions

Important caveat: not all tamari is genuinely gluten-free — some commercial tamari contains small amounts of wheat. Always check the label for “gluten-free” certification or “wheat-free” indication. Brands like San-J and Eden produce reliably gluten-free tamari.

Sushi and sashimi pairing

In Japanese fine-dining tradition, tamari is the preferred soy sauce for sushi and sashimi — its richer, less salty character better complements the delicate fish flavors.

When eating high-quality sushi at a traditional Japanese restaurant, ordering “tamari” rather than generic soy sauce signals appreciation of the difference. Many top-tier sushi chefs offer multiple soy sauces with explicit recommendations for which fish should be paired with which.

For home cooks making sushi or eating sashimi, tamari elevates the experience without significantly changing technique.

Beyond Japan

Outside Japan, tamari has become a specialty product in Western kitchens, popularized through:

• Macrobiotic and natural-foods movements (1960s-1980s)
• Gluten-free dietary spread (2000s-present)
• Japanese cuisine globalization
• Asian fusion and chef-driven cooking

Tamari is now widely available at health food stores, specialty Asian groceries, and increasingly at mainstream supermarkets in the US, UK, Europe, and Australia.

Cooking applications

While tamari can substitute for soy sauce in most recipes, it shines in specific applications:

• Light sauces and dressings where the richer flavor adds depth
• Marinades for delicate proteins (fish, chicken)
• Vegetarian and vegan cooking where umami is critical
• Gluten-free cuisine as a soy sauce substitute
• Finishing oils and dipping sauces for high-quality ingredients

For everyday Asian-style stir-fries, ordinary soy sauce works fine — but for refined applications, tamari adds a depth that ordinary soy sauce can’t match.