What country is credited with creating eggnog?

The country credited with creating eggnog is England. Its origins date back to the 13th century, when it was popularly known as "posset". It gained traction in the American Colonies, where it became a widespread holiday tradition, and eventually spread to other parts of the world. Over time, eggnog transformed into the delicious and creamy beverage we know today, often infused with spices like nutmeg and cinnamon, adding to its seasonal charm.