A grasshopper ice cream drink is made by blending creme de menthe, creme de cacao and vanilla ice cream into a milkshake-like consistency. The amount of each ingredient varies depending on the recipe and a person's taste preferences.
Sandra Lee recommends blending a shot of each liquor with a cup of ice cream for a 12-ounce frozen grasshopper. Other recipes suggest reducing the amount of liquor to 3/4 ounce each, especially for individuals who prefer a less intense mint flavor or want a drink with a weaker alcohol content.
Better Homes and Gardens offers a recipe that makes eight 1/2 cup servings. This method blends 1/2 cup creme de menthe and 1/2 cup creme de cacao with a pint of vanilla ice cream and 3 cups of ice, and suggests topping the drinks with whipped cream, chopped mint candies and fresh mint sprigs.
Creme de menthe is available in both white and green varieties, while creme de cacao can be brown or clear in color. To achieve the traditional green color of a grasshopper ice cream drink, choose green creme de menthe and clear cream de cacao, which is often referred to as white. This drink is most often served as a dessert cocktail after dinner.