Poha dosa batter can typically last in the refrigerator for 2-3 days. After this time, the fermentation process can make the batter too sour.
Poha dosa batter, like other dosa batters, relies on fermentation for its characteristic flavor and texture. The fermentation process continues even when refrigerated, albeit at a slower rate. Storing the batter in the fridge slows down the activity of the microorganisms responsible for fermentation, extending its usability. However, after 2-3 days, the batter can become overly fermented, resulting in a sour taste and potentially affecting the texture of the dosas. Factors like the ambient temperature during the initial fermentation and the cleanliness of the utensils used can also influence the batter's shelf life. It's best to observe the batter for any signs of spoilage, such as a strong, unpleasant odor or the presence of mold, before using it.
To extend the life of your poha dosa batter, store it in an airtight container in the coldest part of your refrigerator. This will help to further slow down the fermentation process.