Which ingredient is included in a Watermelon cocktail?

The most commonly recognized ingredient in a Watermelon cocktail is vodka. Vodka is often used in various cocktails for its ability to blend well with other flavors without overpowering them. In the case of a Watermelon cocktail, vodka complements the natural sweetness and refreshing qualities of watermelon, allowing the fruit's flavor to shine through while providing an alcoholic base for the drink.

Amaretto, while it adds a unique flavor profile with its sweet almond notes, is less typical in watermelon-based cocktails, which focus on lighter, fruity flavors. Tequila and triple sec might also be used in cocktails involving fruit like watermelon, but vodka remains the primary spirit in the classic versions of watermelon cocktails.