Ingredients:

4-5 pieces of 1-2" pineapple pieces
4-5 leaves fresh mint
1 tbsp lime juice
1/2 cup chilled grape juice (if possible freshly prepared at home)
1/2 cup chilled sparkling water or soda
1 tsp agave (optional to adjust sweetness)
ice cubes to serve

Method:

In a small mixing bowl, add pineapple pieces and muddle them using the back of a wooden spatula for a couple of mins or until all pineapple pieces have broken into small pieces. Then, add mint leaves and again muddle for a few seconds to just bruise the leaves and release the essential flavors.
Transfer the muddled mixture into a serving glass. Add ice cubes followed by grape juice, lime juice, sparkling water or soda.
Adjust sweetener if necessary. Give it a gentle mix, add couple of lime slices and enjoy a glass of pineapple mojito this summer