The most popular mushroom has found its way in all cuisine. Largely composed of water and shrink noticeably during cooking. Best cooked in butter or a good oil. Fry over a moderately high heat so that as they shrink the water evaporates and they don't stew in their own juices. For the same reason do not fry too many at once in the same pan.
Note: Images are only for illustrative purposes, actual product and colour may slightly differ.