The Berwick Cake Company went out of business in 1977, but made a significant contribution to the world back in in the 1920s. According to food historians, Berwick was selling a product with 2 mound-shaped pieces of chocolate cake with a sweet filling sandwiched between them. They were not selling well. As a marketing stunt, the company had the actors of the Broadway show "Makin' Whoopee," then playing in Boston, toss the cakes into the audience at curtain call. They were an immediate hit, and the Whoopie Pie was born.