In Season: Almost all mushrooms available at supermarkets are cultivated, not wild, and are available year-round. The most common varieties of cultivated mushroom are mild-tasting white button, flavorful cremini, earthy portobello, savory shiitake, and delicate oyster.
What to Look For: Look for firm, smooth, and dry caps. Avoid damp, pitted, or dried-out mushrooms.
How to Store: Refrigerate loose mushrooms (unrinsed) in a paper bag, and containers of mushrooms in their original package. Use within a few days of purchase.