Why Do Some Mushrooms Taste Like Seafood? Mushrooms are full of natural umami — the savory, rich flavor also found in meats and seafood.Certain varieties have unique textures and subtle flavors that remarkably resemble ocean delicacies, making them perfect for: Vegan and vegetarian diets Allergy-friendly dishes Curious food lovers wanting to expand their taste buds 1. Lion’s Mane Mushroom (Hericium erinaceus) Nickname: "The Vegan Crab" or "Lobster Mushroom" (not to be confuse