What is vision of sugar plums?

The vision of sugar plums is a popular phrase mentioned in the Christmas poem "A Visit from St. Nicholas" (also known as "Twas the Night Before Christmas"). The vision refers to a dreamlike state where a person experiences images of various Christmas treats, including sugar plums, dancing in their head. Sugar plums are a type of candy made from dried fruit such as plums or apricots, coated with sugar or a sugar syrup and often spiced with cinnamon or nutmeg. The phrase has become a symbol of the sweet joys of the holiday season.