White Baby Button Mushroom
White Baby button mushrooms, also known as Agaricus bisporus, are the most popular mushroom variety, making up 90 percent of the mushrooms consumed in the United States. They are also the least expensive and have the mildest flavor, though they readily absorb the flavors that they are cooked with.
How to Use
While many cooks claim that rinsing mushrooms causes them to absorb too much water, a quick rinse is fine, provided you promptly pat the mushrooms dry and don’t leave them soaking in water. If you prefer not to wash mushrooms, be sure to wipe the caps clean with a damp paper towel. Both the cap and the stem of a white button mushroom are edible. Before cooking, just trim off the very end of the stem.
How to Store
Because button mushrooms contain so much moisture, it’s best to store them in the fridge covered by a damp cloth, rather than in a plastic bag, where the mushrooms are apt to soften and become slimy. Use them within three days.