Grapefruit juice is a versatile and tangy ingredient often used in the world of cocktails and alcoholic beverages. Its bright, citrusy flavor profile adds a refreshing and slightly bitter note that can enhance the complexity of many mixed drinks. The juice is typically derived from the fresh fruit of the grapefruit, a member of the citrus family, which is known for its tartness and subtle sweetness. In cocktails, grapefruit juice pairs exceptionally well with a variety of spirits such as vodka, gin, and tequila. For example, the classic Greyhound cocktail features vodka mixed with grapefruit juice, while the Paloma, a popular Mexican cocktail, combines tequila with grapefruit juice and soda. The juice's acidity can balance out the sweetness of other ingredients and add a zesty kick, making it a popular choice for bartenders and mixologists looking to create vibrant and refreshing drinks.