Which cocktail making method is used for drinks requested on the rocks?

The Pour or Building Method is the correct choice for making cocktails that are requested "on the rocks." This method involves adding ice directly to the glass before pouring the ingredients over it. This technique not only chills the drink rapidly but also allows the ingredients to mix naturally as they are poured over the ice.

When a drink is served on the rocks, it specifically implies that it should be served over ice in an appropriate glass, which is achieved effectively using the Pour or Building Method. This method suits a variety of drinks, encouraging the optimal integration of flavors while keeping the drink cool and refreshing.

The other methods do not align with the concept of serving drinks on the rocks. The Rolling Procedure, for example, is typically used to mix cocktails that benefit from aeration and would not be suitable for a simple on-the-rocks request. The Muddler focuses on extracting flavors from ingredients such as herbs or fruits, and is more appropriate for cocktails that incorporate these components rather than being served over ice. The term Chaser usually refers to a drink that is consumed immediately after another drink, which doesn't pertain to the preparation method for a cocktail served on the rocks.