Mushrooms

Having almost finished the regular mushrooms, I put mushrooms on our shopping list. Ceila was the next to go to the store, and bought shiitake mushrooms, a bit different from what I expected. A few days later...

Me: "I've been using the shiitake mushrooms and found that there are a few foods that they don't go as well with as the regular mushrooms."

Her: "You mean they're not fungible?"