A plum cocktail is a drink that typically contains vodka, champagne, and plum juice. Plum juice is made from plums, and it is a sweet and tart juice that is used to make cocktails and smoothies. Vodka is a clear liquor that is made from potatoes or grains, and it is often used in cocktails because it is flavorless. Champagne is a sparkling wine that is made from grapes, and it is often used in cocktails because it is bubbly …