Blue mushroom: Is it edible, what does it taste like and where can you find it?

The striking blue mushroom found in Mexico’s rainy-season forests is not poisonous or hallucinogenic, according to this culinary guide. Lactarius indigo is described as fully edible, safe and highly valued in traditional cooking.

Its electric-blue color comes from a natural pigment derived from azulene. When cut, the mushroom releases an intense blue milky liquid that gradually turns greenish in the air. The change is natural and does not affect its safety or flavor.

The mushroom has an earthy, slightly sweet taste with hints of nuts or sweet milk. Its firm, meaty texture stays crisp when cooked, making it suitable for stews and other hot dishes.

Lactarius indigo grows in association with pine and oak roots. Wild harvesting in Mexico generally takes place from July to October in Tlaxcala, the State of Mexico, Puebla, Michoacán, Hidalgo and Oaxaca. During the rainy season, buyers can also find it in specialized Mexico City markets such as Mercado de San Juan Pugibet and among traditional wild-mushroom sellers in La Merced.

The guide recommends cleaning the mushroom with a soft brush or damp cloth rather than soaking it in water. Suggested preparations include sautéing it with butter, garlic, epazote and salt, using it in blue-corn quesadillas with Oaxaca cheese, or adding it to green sauce or an al ajillo dish.