Four types of peanuts are the most popular: Spanish, Runner, Virginia, and Valencia. There are also Tennessee Red and Tennessee White types. Certain types are preferred for particular uses because of differences in flavor, oil content, size, and shape. For many uses the different types are interchangeable. Most peanuts marketed in the shell are of the Virginia type, along with some Valencias selected for large size and the attractive appearance of the shell. Spanish peanuts are used mostly for peanut candy, salted nuts, and peanut butter. Most Runners are used to make peanut butter.