This blue beauty, also known as the Indigo Milk Cap, is a named for its color and the milky sap, or latex, which oozes when the fungus is broken or cut. This sap changes in color from blue to green when exposed to air, and is used in some dishes for coloring. Lactarius indigo is edible, though is considered to be an acquired taste due to its grainy texture and peppery flavor.
