The term 'DEMON BEVERAGE' is a crossword solution that can be filled in with the three-letter word 'RUM'. RUM is an alcoholic beverage made from sugarcane byproducts, such as molasses or honey, and is usually aged in oak barrels. It is popular in many parts of the world, including the Caribbean, Latin America, and Southeast Asia. It is often used in mixed drinks and cocktails, and is also enjoyed neat or on the rocks.