What's the difference between a cocktail and just a drink? I generally agree with Peggy on "Mad Men" who says in one episode, a cocktail has three ingredients. Anything less? "Desperation!"
However, I've recently become drawn to all those flavored vodkas you can buy at the liquor store. Most recently I've experimented with marshmallow and cotton candy. Add an ounce of either to a glass of lemon-lime soda and you have a delicious adult beverage. (See, I didn't call it a cocktail!)
The beverage pictured has one ounce of marshmallow vodka added to a glass of pink lemonade over ice. Easy and tasty!