National Chocolate Chip Day is celebrated on May 15, 2017. It's a day to celebrate the small chunks of chocolate.Chocolate chips are often sold in a round, flat-bottomed teardrop shape. They are available in numerous sizes, from large to miniature, but are usually less than 1 cm in diameter. Today, chocolate chips are very popular as a baking ingredient in the United States and the chocolate chip cookie is regarded as a quintessential American dessert. Chocolate chips are also available in Europe, Australia, and other parts of the world.
Chocolate chips are a required ingredient in chocolate chip cookies, which were invented in 1937 when Ruth Graves Wakefield of the Toll House Inn in the town of Whitman, Massachusetts added cut-up chunks of a semi-sweet Nestlé chocolate bar to a cookie recipe. The cookies were a huge success, and Wakefield reached an agreement in 1939 with Nestlé to add her recipe to the chocolate bar's packaging in exchange for a lifetime supply of chocolate. Initially, Nestlé included a small chopping tool with the chocolate bars. In 1941 Nestlé and one or more of its competitors started selling the chocolate in chip (or "morsel") form. (With material from: Wikipedia)