Watermelon - Apple Juice is a combination juice and it tastes good. Ingredients Watermelon - 1/4 part Apples - 2 Sugar - 3 tbsp Water - 1/2 cup Method Remove the seeds from the watermelon and remove its fleshy content using a knife or spoon. Clean the apple and peel the skin off. Cut the apple into small pieces and put them in a blender and make it to a fine paste adding water. Add the watermelon and sugar with the apple juice and blend them again. Chill the juice and serve.