Derby-Pie: The secret of Kern's Kitchen

One man bakes more than 120,000 Derby-Pies each year to preserve the recipe

Kentucky family-run outfit has produced the chocolate nut pie with patented name for six decades.

There’s only one Derby-Pie and it’s been a secret recipe for 60 years. The Derby-Pie is made by Kern’s Kitchens in Louisville, Kentucky, and the reason the recipe is secret is because one man bakes all the pies.