In a Whiskey Sour, which ingredient provides the sour balance?

• A. Orange Juice
• B. Lime Juice
• C. Lemon Juice
• D. Grape Juice

Answer: (C)

The sour balance in a Whiskey Sour comes from lemon juice. Its acidity cuts through the sweetness of the sugar and the warmth of the whiskey, giving the drink a bright, crisp citrus lift that defines its classic flavor. Orange juice would add more sweetness and fruitiness, shifting the profile. Lime juice, while acidic, can be too tart and may overpower the whiskey’s character. Grape juice isn’t used for a sour balance and would change the drink’s flavor in a different direction. So lemon juice best provides that sharp, refreshing sour note.