What is the traditional way to enjoy an absinthe drink with a sugar cube?

To enjoy an absinthe drink traditionally with a sugar cube, you place the sugar cube on a slotted spoon over the glass of absinthe. Then, slowly drip cold water over the sugar cube until it dissolves into the absinthe, creating a louche effect. This method is known as the "louching" process and is believed to enhance the flavor and aroma of the drink.