Betsy Lantz's Hot Sweet Dip Mustard was created by a seasoned cook named Betsy Lantz. So many family and friends enjoyed her handmade mustard that she decided to sell it. While Betsy no longer stirs the kettles, the recipe is still handmade in Lancaster County. The recipe, kept a secret by its makers for over 30 years, has delighted those who have had the opportunity to use it.