Campbell's pork and beans, like many varieties, are made with pea beans. These beans are also known as navy beans, white coco beans, Boston beans or white beans.
Pea beans are small beans, which means they cook quickly. This quality is one reason they are used in many commercial products, such as pork and beans or baked beans. As the name "white beans" implies, they are white on the outside. They are oval in shape and hold up through cooking. They have a mild flavor, and their texture is firm. They also do well in purees. They can be used in place of Great Northern beans.