Dried
Dried oyster mushrooms are available and can be rehydrated for use, offering a more intense flavor and longer shelf life than fresh.
Fresh
Oyster mushrooms can be found fresh in many grocery stores and farmers' markets, often sold in clusters with their soft, broad caps intact.
Powdered
Oyster mushroom powder is sometimes sold for use in seasoning blends or as a supplement.
dried oyster mushrooms: Mushroom House
oyster mushroom powder: Terrasoul Superfoods
Grilling: Grilling oyster mushrooms can impart a smoky flavor and a firm texture. Brush them with oil and season before placing them on a hot grill. They cook quickly, so monitor them closely to prevent burning.
Roasting: Roasting at a high temperature (around 400°F or 200°C) can intensify the flavor and texture of oyster mushrooms. Spread them out on a baking sheet, drizzle with oil, and roast until they are crispy on the edges.
Sautéing: Sautéing oyster mushrooms in a bit of oil or butter over medium-high heat allows them to brown and develop a rich flavor. Cook them in a single layer, and don't stir too often to give them a chance to caramelize on the edges.