Possible Clues:

• Tart vodka cocktails
• Tart lozenges
• Yellow citrus-flavored candies
• Tart treats
• Useless person declines sweets
• Tart-tasting candies
• Bad-day-in-the-market headline for a used car lot?
• Tart sweets
• Slightly sour candies
• Confectionery for the world (not English - Europe's bits)