Have you seen the Mustard Man?

Many folks wouldn’t dream of having a summer cook-out without mustard. The briny yellow condiment is often a prized topper for hot dogs, burgers, and brats. But while most folks see mustard as a squirt of zesty yellow ooze, one Mt. Horeb man literally regards mustard as an institution. Brian Bull profiles Barry Levinson, and his Mustard Museum…