At the first Thanksgiving, which took place in 1621, the menu is believed to have included various types of seafood like lobster, clams, and fish, as well as wild fowl such as ducks, geese, and turkeys. It's also likely that the meal featured venison and other meats, along with vegetables like corn, beans, and squash. However, specific details about the exact foods consumed during the event are limited, and the menu may have varied based on the available resources and the Native American and Pilgrim traditions of the time.