So, for National Mustard Day (August 3), French's thought to make mustard-flavored ice cream. They're selling their horrible concoction for a limited time on both coasts:
To celebrate National Mustard Day on the West Coast, Coolhaus’s location in Culver City, CA will have the ice cream available on August 2-4 and August 9-11. On the East Coast, New Yorkers can look for the French’s Mustard Ice Cream truck on August 1 and 2, before making its way out to the Hamptons on August 3…
Madison Square Park
Brooklyn Heights (DUMBO)
Main Street Hamptons
East Hampton Main Beach on Ocean Ave.
Or, you can make your own. Because, why not? French's leads the way: