The cloth pudding sacks, also known as boiling sacks, were at one time considered "modern," at least compared to Medieval pudding casings made with animal parts (similar to sausage-making).

With regard to figgy pudding, it is a dessert traditionally made during Christmastime, with origins harking back to medieval England. The first known recipe appeared in a 14th-century English ...

But the day is also written in religious history. In Medieval England, around the 1540s, the Roman Catholic Church commanded that a pudding should be made on the 25th Sunday after Trinity Sunday.