Processed American cheese is packaged in individually wrapped slices, as unwrapped slices sold in stacks, or in unsliced blocks.[13] Individually wrapped slices are formed from processed cheese which solidifies only between the wrapping medium;[14][failed verification] these slices, sold as 'singles', are typically the least like traditional cheese. Blocks of American cheese are more similar to traditional cheese, and are sliced to order at deli counters.[15]