Identification
The familiar white/brown cultivated mushroom; cremini and portobello are the same species at different ages.
Edibility
Edible cooked — the industry standard. UV-exposed mushrooms carry meaningful vitamin D2 (the industry uses this).
In practice
- The wild counterpart for foragers is the field mushroom.
- Bought mushrooms: cook — raw agaricus carries agaritine, which cooking reduces.