Caesar’s mushrooms have a smooth deep orange-red skin that is firms and somewhat elastic; it holds its shape when cut. The underbelly of the cap is lined with yellow gills. The stems are often encapsulated with the remnants of the universal veil called the volva, which is a white cup-shaped piece that protects the developing gills.
When they are young, the volva hugs the small cap and the mushroom resembles an egg, thus earning it the nickname “ovoli”. The flavor and fragrance are similar to hazelnuts or chestnuts, which may have to do with their growing environment.