Fan-shaped mushroom with delicate flavor. 100g cooked provides 3.3g protein, significant beta-glucan, niacin (30% DV), riboflavin (22% DV), potassium, iron, and ergosterol (the UV-activated vitamin D2 precursor that converts to D2 when mushrooms are placed gill-side up in sunlight). Contains lovastatin (mevinolin) — the naturally occurring statin compound.
Available at most grocery stores year-round. Very affordable. Asian markets often sell fresh oyster mushrooms cheaply. Increasingly at farmers markets.
Oyster mushrooms naturally contain lovastatin — the compound from which the pharmaceutical drug Mevacor was derived. The concentration (typically 0.4-2.8% of dry weight) means culinary consumption provides a meaningful but sub-pharmaceutical lovastatin dose — complementing rather than replacing statin medications. Multiple in vitro and animal studies confirm oyster mushroom's cholesterol-lowering activity via lovastatin and beta-glucan (which binds bile acids). For vitamin D: placing oyster mushrooms gill-side up in direct sunlight for 15-30 minutes converts ergosterol to D2 — a single UV-exposed serving can provide 300-2000 IU vitamin D2. This is a practical, free intervention for vitamin D deficiency that requires only a sunny windowsill. The beta-glucan (1,3/1,6) strongly activates innate immune function, particularly Natural Killer cells — the primary immune defense against cancer cells and viral infections.
Sauté in butter or olive oil with garlic and thyme — 5-7 minutes over medium-high heat. Roast: 425°F on sheet pan until crispy edges develop. Use as a meat substitute in tacos, grain bowls, pasta. UV-expose before cooking: place whole mushrooms gill-side up in direct sunlight 30-60 minutes, then cook normally. The vitamin D2 survives cooking.
Free, no account needed to ask.