What is the main fruit juice ingredient in a Pina Colada?

The main fruit juice ingredient in a Piña Colada is pineapple juice. This tropical cocktail is traditionally made with rum, coconut cream or coconut milk, and pineapple juice, blending these ingredients to create a smooth and refreshing drink that reflects the flavors of the Caribbean. Pineapple juice not only provides the signature sweet and tart flavor that defines the Piña Colada, but it also contributes to the drink's vibrant yellow color. The combination of coconut and pineapple is a staple in tropical cocktails, making the choice of pineapple juice essential for the authenticity of the Piña Colada.