Seemingly, not a lot of creativity went in to naming multigrain bread, since it’s defined simply as bread made from more than one grain. It can include flax, oats, and barley, but be aware that even bread made from wheat and a smidge of flour from a second grain can be called multigrain. If you’re looking for dense, hearty multigrain, which is terrific for sandwiches, be sure to check the label.