A "Baker's Dozen" refers to a quantity of thirteen items, typically baked goods like bread or cookies. This term originated in medieval England when bakers would include an extra item to avoid penalties for selling underweight products. By adding an extra item, bakers ensured they met the required weight and provided good customer service. The practice of giving an extra item has continued over the years, and the phrase "Baker's Dozen" is now commonly used in various contexts. It symbolizes generosity and the idea of giving a little more than expected, making it a popular expression in both culinary and everyday language.