The signs as sour foods:

Aries: Warheads

Taurus: Sauerkraut

Gemini: Sour Patch Kids

Cancer: Pickle

Leo: Lemonade

Virgo: Greek Yogurt

Libra: Grapefruit

Scorpio: Toxic Waste Candy

Sagittarius: Sweetarts

Capricorn: Vinegar

Aquarius: Star Fruit

Pisces: Lime