Strawberry Coconut Mojitos

Name: Strawberry Coconut Mojitos
Cuisine: Cuban
Ingredients: 1 cup whole fresh strawberries, or frozen (hulled and sliced); ½ cup granulated sugar; 1/2 cup water; 2 tablespoons caster/powdered sugar (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)); 1 handful mint leaves (reserve extra to garnish); 4 whole strawberries (sliced and divided); 2 medium limes (divided); 1/2 cup white coconut rum (divided); 1 cup ice cubes; 1/2 cup sparkling water or club soda