You can substitute soy sauce ... label first (6, 7). Tamari has a richer, stronger, and less salty umami flavor than soy sauce due to its higher soybean protein content (8). You can replace fish ...

Nguyen recommends looking for a fish sauce with minimal ingredients. “So, fish, salt, water, and maybe a little sugar,” she says. If a label says "first-press," that's a good sign it's high ...

As an additional benefit, the sauce helps cook the protein. After searing the fish filet on one side, you flip the filet, pour in the sauce, and simmer dinner until it’s tender and flaky.