Minted Fruit Cocktail Juice

1 apple, peeled, cored, and sliced
1 orange, peeled and divided
1/2 cup pineapple
2 cups watermelon, cubed and seeded
1 teaspoon lemon juice
A small sprig of fresh mint

Juice the apple and orange first, followed by the pineapple. Transfer juice to a blender, and add the watermelon, lemon juice, and mint. Puree until smooth.