Due to its fleshy texture and fine umami taste, the oyster mushroom is perfect for making burgers. GRO also cultivates these mushrooms circularly on coffee grounds. The tender Oyster Mushroom Burger is vegan, clean-label, and deliciously healthy with a nutriscore A. Made from 73% mushrooms from the Netherlands. Quickly and easily prepared thawed or frozen in a pan, grill, oven, or fryer.