Tamari (Best Option)
1 teaspoon per 1 tablespoon soy sauceTamari is a Japanese soy sauce variant that is typically gluten-free and has a richer, less salty profile compared to regular soy sauce. It provides the essential umami and saltiness needed to enhance the custard base of French toast without adding bitterness or excessive salt.
When using tamari, start with a slightly reduced amount and adjust to taste, as it can be more concentrated. Ensure it is well mixed into the egg and milk mixture to maintain a smooth batter.
The final French toast will have a subtle savory depth that complements the sweetness, closely mimicking the flavor balance achieved with soy sauce but with less risk of gluten contamination.