Which fruit garnish is used in a Pina Colada?

The Pina Colada is a tropical cocktail that traditionally features flavors of coconut and pineapple, making the pineapple slice a fitting garnish. This garnish not only complements the drink's flavor profile but also enhances the tropical aesthetic associated with the Pina Colada. The use of a pineapple slice reflects the key ingredients of the cocktail itself, reinforcing the drink's identity and inviting presentation.

Other garnishes like cherries, orange slices, and strawberries may be commonly used in various cocktails but do not align with the signature elements of a Pina Colada. Therefore, pineapple is the most appropriate choice for this specific drink.