National Truffle Day is observed worldwide on May 2 each year, celebrating the delightful chocolate truffles that originated in France. The creation of truffles is attributed to August Escoffier in the 1920s, when an apprentice accidentally mixed hot cream with chocolate, resulting in a ganache that could be formed into lopsided balls and rolled in cocoa powder. This resemblance to the truffle fungus inspired the name. Over time, truffles have evolved to include a variety of fillings such as cream, caramel, and liquor, particularly after Belgian chocolatier Jean Neuhaus invented the hard chocolate shell. Different types of truffles, including European, Swiss, and American, have emerged, with American truffles being developed in the 1980s by Joseph Schmidt in San Francisco. National Truffle Day encourages people to indulge in these sweet treats and explore the diverse flavors they offer.