The Midori Sour and the Melon Ball are two cocktails featuring Midori Melon Liqueur. However, they have distinct differences. The Midori Sour combines Midori Melon Liqueur with lemon juice, resulting in a balanced sweet and sour drink with a prominent melon flavor. It's typically green in color and garnished with a cherry. On the other hand, the Melon Ball pairs Midori Melon Liqueur with vodka and either orange or pineapple juice, offering a sweeter and fruitier taste reminiscent of a tropical cocktail. The Melon Ball is known for its vibrant green hue and melon garnish.