1 large navel orange
2 carrots, roughly chopped
1/2 cucumber, roughly chopped
1/2 cup water, or as needed
1/4 cup white sugar, or to taste
1 teaspoon lemon juice (optional)
Peel orange and save a 1×1-inch piece of the peel. Place orange, orange peel piece, carrots, and cucumber in a blender; pour in water. Blend until desired consistency is reached; add sugar and lemon juice. Blend until smooth, 1 to 3 minutes.