What is a substitute for white miso?

Best miso paste substitute

The best miso substitute? Soy sauce. Soy sauce can stand in for the salty and savory flavor of miso in a pinch. But keep in mind: miso paste has a creamy texture and soy sauce is very thin, almost like water.

Where in the grocery store is white miso?

In many big supermarkets, miso of all colors is kept in the produce area with the tofu, tempeh and mock meats. The same is true of red miso, yellow miso and any other type. If you don't see it there, look for an organic or natural foods aisle. Since miso is typically refrigerated, you should find it in a cooler.