Jumble

Jumbles are simple butter cookies made with a basic recipe of flour, sugar, eggs, and butter. They can be flavored with vanilla, anise, caraway seed, or other flavoring like almond. They were formerly often made in the form of rings or rolls. Jumbles were widespread, specifically because they travelled well, thanks to their very dense, hard nature. They could be stored for up to a year without becoming too stale. Because of their density, they were sometimes twisted into knots before baking, in order to make them easier to eat, generating knots as another common name.

Source: Wikipedia