Tamari (Best Option)
1 tablespoon per 1 tablespoon soy sauceTamari is a Japanese soy sauce variant that is typically gluten-free and brewed with little to no wheat, preserving the umami depth and saltiness essential in salad dressings. Its fermentation process yields a rich, smooth flavor that closely matches traditional soy sauce.
When using tamari, ensure it is well mixed into the dressing as it may be slightly thicker. Because it is less salty than some soy sauces, taste and adjust salt levels if necessary.
The final dressing will retain the characteristic dark color and savory complexity of soy sauce-based dressings, with minimal flavor deviation.