Lactarius indigo, commonly known as the indigo milk cap, is a species of mushroom found primarily in North America and parts of Central America. It is easily recognizable by its striking blue color, which can vary from bright blue to greenish-blue. This mushroom typically grows in forests, often in association with coniferous trees, and is known for its distinctive milky latex that oozes from its gills when cut. The indigo milk cap is edible and has a mild flavor, making it a popular choice among foragers. However, it is essential to properly identify this mushroom, as some look-alikes can be toxic. Mushroom foraging enthusiasts often seek out Lactarius indigo for its unique color and culinary potential.