Healthy Food Database

The white Agaricus bisporus mushroom is the most common mushroom, available from almost every greengrocer. It was first discovered in 1932 by Lewis F Lambert in Pennsylvania. The mushroom is picked at four stages during its growing cycle.
Button mushrooms:
This is the earliest stage. The mushrooms are small.
Closed Cup mushrooms:
This is the next stage in the growing cycle and the most popular commercially. The mushroom is bigger than a button mushroom but is still enclosed around the stalk and very firm.
Open Cup mushrooms:
Stage 3 - The mushroom is slightly bigger, its cap released away from the stalk, exposing a dark brown underside.
Large Flat mushrooms:
These mushrooms are popular for stuffing and baking in the oven. They can grow to be ...