The term BEVERAGE IN A KETTLE can be solved by the three letter word TEA. TEA is a popular beverage that has been consumed for centuries, originating in China and then spreading to other parts of the world. It is typically made by steeping dried leaves of the Camellia sinensis plant in hot water. TEA is often served in a kettle, which is a metal pot with a lid and a spout used for boiling and serving hot liquids.