Chestnut Mushroom
cremini (US) · baby bella (US) · brown mushroom · Agaricus bisporus
The chestnut mushroom is the superior commercially grown variety, the same species as the white button mushroom (Agaricus bisporus) but harvested later in its development, when its cap has deepened in colour and its flavour has concentrated. Mushrooms are approximately 90% water, and their cooking follows a predictable trajectory: they release this water first (the sizzling-then-steaming phase) and then, once the moisture has evaporated, they finally begin to brown. Patience — and not crowding the pan — is everything.
Earthy, umami-rich and meaty with a savoury depth that intensifies with cooking. Contains significant concentrations of glutamic acid, contributing to umami. Dried mushrooms have an even more concentrated earthy character.
Firm and slightly sponge-like raw. Becomes dense, tender and almost meaty when well-browned. The texture changes dramatically between the watery, steaming phase and the browned, finished phase.
Refrigerate in a paper bag (not sealed plastic — mushrooms need to breathe) for up to 5 days. Do not wash until ready to cook — moisture causes deterioration. Wipe clean with a damp cloth instead.
Wipe clean rather than washing. Trim the base of the stalk. Do not salt until after browning begins — salt draws out water and prevents browning. For pan-frying: use a very hot, dry pan; add oil and cook without crowding; do not stir for 2–3 minutes to allow browning to begin.