Wassail is a hot drink made with mulled cider, spices, and sugar. The drink is topped with slices of toasted sop bread and it is traditionally drunk on Yuletide from a large wassailing bowl. It is the essential part of wassailing - a Medieval Christmas English drinking ritual done to ensure a successful cider apple harvest in the upcoming year.
The word wassail comes from the Anglo-Saxon phrase was hael meaning good health. Another variant of this drink is Lambs Wool, made with mulled ale, baked crab apples, sugar, and spices. The name comes from the frothy appearance that the apple pulp imparts on the drink.