Strawberry Coconut Mojitos

Name: Strawberry Coconut Mojitos
Cuisine: American
Ingredients: 1 cup whole (, fresh strawberries (or frozen if you don't have fresh), hulled and sliced); ½ cup granulated sugar; 1/2 cup water; 2 tablespoons caster/powdered sugar ((or super fine coconut) - you won't use this much, but it helps to rim the glasses); 4 whole strawberries (, sliced in half to the leaf but not sliced all the way through (see images above)); Handful of mint leaves ((reserve extra to garnish)); 4 whole strawberries (, sliced and divided); 2 limes (, divided); 1/2 metric cup ((4oz | 120ml) white coconut rum, divided); 1 cup ice cubes; 1/2 cup sparkling water or club soda