All diet drinks with cherry should contain what ingredient?

The correct answer is that all diet drinks with cherry should contain low-cal diet cherry syrup. This ingredient is specifically formulated to offer the cherry flavor without the added sugars and calories typically found in regular cherry syrup. Diet drinks aim to provide a lower-calorie alternative to traditional beverages, catering to consumers who are conscious about their sugar intake while still desiring the distinct taste of cherry.

While cherry flavoring is an essential component for adding the characteristic taste, it alone does not qualify the drink to be considered a diet option since it may not address calorie content. Regular cherry syrup, on the other hand, is high in sugars and calories, which is contrary to the purpose of diet drinks. Diet cherry soda might seem relevant, but it is a broader category; specifically mentioning low-cal diet cherry syrup emphasizes the need for an ingredient that ensures the drink meets diet standards while maintaining flavor.