Is Worcestershire sauce similar to fish sauce?
Given that both fish sauce and Worcestershire are made from fermented anchovies, there are similar flavours. Worcestershire has a lot more sweetness and other flavours from the spices onion and garlic. Start with half the amount of fish sauce and add a little brown sugar or molasses to provide sweetness.
Can you replace fish sauce with vinegar?
For an even closer substitution, replace the fish sauce with 1/2 soy sauce and 1/2 rice vinegar (or other vinegar). This will give you the salty sour freshness.
Can I substitute fish sauce for soy sauce?
Like soy sauce, it’s dark-hued, thin, salty, and umami-rich, so it makes a pretty good substitute. But unlike soy sauce, it’s derived from fish (usually anchovies, always fermented). Because of its intense flavor and scent, you’ll want to add fish sauce to taste, versus a 1:1 substitute.