This decanter carafe not only brings out the best in your wine by allowing it to aerate, the accompanying base also serves as a cool element which helps to keep the wine chilled for many hours on the table. How to use: Remove the cold gel from the base and place it in the freezer before use Once the gel is frozen, return it to the base which sits under the carafe on the table - the base also prevents any condensation from running onto the table.