Soy Sauce with Lime Juice (Best Option)
1 tablespoon soy sauce + 1 teaspoon fresh lime juice per 1 tablespoon fish sauceSoy sauce provides a rich umami base similar to fish sauce, derived from fermented soybeans, which complements the starchiness of risotto. The addition of lime juice introduces a subtle acidity that replicates the tangy brightness of fish sauce, balancing the creaminess.
For best results, add the mixture gradually and taste as you go to avoid making the risotto too salty or acidic. Fresh lime juice is preferred over bottled for a cleaner flavor.
Compared to fish sauce, this substitute yields a less pungent but still savory and balanced flavor, preserving the risotto's delicate texture and enhancing its overall depth.