01 - Combine 1/2 cup water and 1/4 cup sugar in a small saucepan over medium heat. Stir continuously until sugar completely dissolves. Remove from heat and allow to cool to room temperature before using.
02 - Add diced mango, halved strawberries, and freshly squeezed lemon juice to a blender canister. Process on high speed until completely smooth and no fruit chunks remain, approximately 45-60 seconds.
03 - Pour blended mixture through a fine mesh sieve into a large pitcher. Use a spoon or rubber spatula to press puree through mesh, extracting maximum liquid while removing fibrous pulp and seeds. Discard solids.
04 - Pour cooled simple syrup and 3 cups cold water into the pitcher with strained fruit puree. Stir thoroughly with a long-handled spoon until all components are fully incorporated and uniform in color.
05 - Taste lemonade and add additional sugar or water as needed to achieve desired sweetness and intensity. Stir well after each adjustment to ensure proper distribution.
06 - Fill glasses with ice cubes. Pour lemonade over ice. Garnish with fresh mint leaves, strawberry slices, mango chunks, and lemon wheels as desired. Serve immediately while thoroughly chilled.