01 - Heat 1/2 cup water and 1/4 cup sugar in a small saucepan over medium heat, stirring constantly until sugar completely dissolves. Remove from heat and allow to cool to room temperature.
02 - Combine diced mango, halved strawberries, and freshly squeezed lemon juice in a blender. Process on high speed until completely smooth, approximately 45-60 seconds.
03 - Pour the fruit puree through a fine mesh sieve into a large pitcher, using a spoon to press through as much liquid as possible. Discard the fibrous pulp remaining in the sieve for a smoother consistency.
04 - Add the cooled simple syrup to the strained fruit puree in the pitcher. Pour in 3 cups of cold water and stir thoroughly until all components are fully incorporated.
05 - Taste the lemonade and add additional sugar or water as needed to achieve your preferred balance of sweetness and tartness. Stir well after each adjustment.
06 - Fill glasses with ice cubes and pour the lemonade over. Garnish with fresh mint leaves, strawberry slices, mango pieces, and lemon wheels. Serve immediately while chilled.