Tamari (Best Option)
1 tablespoon per 1 tablespoon of soy sauceTamari is a gluten-free soy sauce alternative that closely mimics the flavor profile of traditional soy sauce, providing the necessary umami and saltiness to balance the sweetness of zucchini bread. Its slightly thicker consistency helps maintain the batter's moisture balance.
When using tamari, ensure it is well incorporated into the wet ingredients to distribute flavor evenly. Because it is gluten-free, it is suitable for those with gluten sensitivities without compromising taste.
The final bread will have a comparable savory depth and moist crumb, making tamari an excellent one-to-one replacement for soy sauce in this context.