Which statement is true about Kenny's Cooler?

Kenny's Cooler is a popular cocktail that has a specific preparation method which involves shaking the ingredients in a tin prior to serving. This technique is essential as it ensures the ingredients are well-mixed and chilled before being poured into a glass filled with ice. Shaking allows for proper dilution and integration of flavors, resulting in a refreshing drink.

Considering the other options, the layering of ingredients without shaking would not achieve the desired consistency and flavor profile. Serving the drink warm would contradict the typical experience expected from a cooler, which is refreshing. Additionally, a cooler traditionally benefits from ice to maintain its chill, making a version without ice less appealing and not aligning with the standard presentation of this drink.