There are many reasons to store your starter in the refrigerator. Plus, it’s simple and convenient.
There are several reasons for storing your starter in your refrigerator:
Storing your starter in your refrigerator couldn’t be easier, and even if you bake every day, you should store one for reason #3 above.
When it’s time to feed your starter, make two new jars of starter instead of one. After two hours, take one of the jars and put it in your refrigerator. It will last 2-3 months in your refrigerator, but we recommend changing it every month just to be safe.
We’ve read about bakers using their starter straight from the refrigerator, and it would probably make an okay loaf of bread because it will have leavening power. However, our advice is to feed it two or more times according to your normal feeding schedule before you want to add some to your dough.