What citrus flavor is original Fresca known for?

The original Fresca flavor is grapefruit.

Fresca is a citrus soft drink created by The Coca-Cola Company and introduced in the United States in 1966. Its signature profile is grapefruit citrus, giving the drink a bright, tart flavor that distinguishes it from orange soda and lemon-lime beverages.

The original American formulation was marketed as a sugar-free diet soft drink. Early Fresca descriptions also emphasized a citrus blend involving lime and grapefruit, but grapefruit is the flavor most closely associated with the original brand and is the canonical answer to this question.

Fresca later expanded beyond its original profile. Modern product lines have included flavors such as black cherry citrus, peach citrus, and blackberry citrus, which can cause confusion when people encounter newer cans or regional varieties. The name itself comes from fresca, a word meaning “fresh” in Italian, Spanish, and Portuguese.