Parmigiano-Reggiano is made into large drum-shaped wheels that have a hard natural rind and crumbly, aged interior. The flavor is often described as spicy, savory, salty, fruity, caramelized, and nutty. These complex flavors are what make Parmigiano-Reggiano cheese so popular. Parmigiano-Reggiano is one of the most well-known Italian cheeses. It has been made for at least 700 years.