Portabella mushrooms are closely related to white button mushrooms. While similar in texture, portabella mushrooms are left to grow larger, allowing their caps to open and the spores in the gills to develop fully. This contributes to their intense, delicious flavor. You can savor the full flavor anytime with these dried portabella slices. Serve in strips instead of chicken strips in a portabella Caesar salad or on pizza; sauté or stir fry with other vegetables and meats; or add to pasta, soups, sauces, casseroles and vegetarian dishes.