If you happen to have a root cellar, you may be able to store your mushrooms there as well. Make sure that the temperature in your root cellar is appropriate. You may also need to keep the mushrooms in a plastic container so that there is enough humidity to make sure they don’t dry out.

Every day or two, check the mushrooms and make sure that the paper towel is still damp. If it’s not, get it slightly damp once again.

A zip-lock bag works well for storing mushrooms because the opening can be kept open by simply only zipping part of it closed. It is important to make sure that this plastic bag stays partially open. If it accidentally gets completely closed, the mushrooms can spoil quickly.

Buying loose mushrooms also allows you to only buy the exact amount of mushrooms you need at one time. This can minimize the need to store mushrooms in your refrigerator for long periods of time.

While pre-sliced mushrooms can be a great time saver if you are going to use them right away, whole mushrooms will last longer if you need to store them for multiple days.

Buying directly from a mushroom grower or forager may also mean that you will have access to more types of mushrooms. For instance, wild varieties of mushrooms are not often available at large grocery chains. Mushroom growers and foragers can typically be found selling their goods at farmers markets or at their farms. Do an internet search to find a grower near you.

Even when getting ready to use your mushrooms, you do not need to give them a thorough wash. You can either rinse them lightly or scrub them off with a soft brush or paper towel. [7] X Research source