National Mustard Day in Middleton
National Mustard Day is celebrated every first Saturday in August outside the National Mustard Museum in downtown Middleton, Wisconsin. Hubbard Avenue closes to traffic for a street festival featuring mustard, brat, and pretzel vendors, mustard-themed games, live music, and family activities, tied to a museum collection of more than 6,700 mustard jars, pots, and tubes.
National Mustard Day traces its origin to the singular obsession of Barry Levenson, a former Wisconsin Assistant Attorney General who began collecting mustard in 1986, reportedly after the Boston Red Sox lost the World Series that year left him needing a new focus.