Take fresh tembikai and cut into cubes.
Peel rose lime and slice it.
Soak the rose lime in five tablespoons of sugar for five minutes.
Blend the soaked rose lime with a small amount of water to create a syrup.
Start by preparing the Tembikai Rose Sparkling: mix the blended rose lime syrup, tembikai cubes, and sparkling water. Stir well and chill in a serving bowl until ready to serve.
To prepare the Watermelon Orange Cooler: slice oranges and blend with a small amount of water or sparkling water to create a slushy texture.
Combine the orange slushy with the chilled Tembikai Rose Sparkling mixture just before serving.
Serve in individual servings, garnished with additional orange slices for presentation.