A ruler for mixing the ingredients of a selected beverage is slidably received in a vertical slot formed on the inside wall of a pitcher. The beverage ingredients for mixing are listed on each side of the ruler. The list of ingredients for each beverage is color coded to distinguish one beverage from another. The amount and order for mixing the ingredients in the pitcher are identified by parallel spaced measuring lines extending from the bottom to the top of the ruler. The lowermost measuring line on the ruler identifies the first ingredient added to the pitcher. The remaining ingredients are sequentially added to the pitcher to the level of the measuring line identifying each ingredient. The ingredients for mixing are added to the pitcher without requiring the volume of each ingredient to be separately measured and added. With the mixing ruler being releasably attached to the pitcher a set of mixing rulers for a collection of beverage recipes is available for use in mixing beverages in the pitcher.