Possible Clues:

• Sucker with a chewy center
• Treat for Mr. Owl
• "How many licks does it take ... ?" treat
• 'How many licks does it take ... ?' treat
• Candy with a chewy center
• Chocolaty candy on a stick
• Venerable candy on a stick
• Dubble Bubble sister product
• Lickable candy since 1931
• Sucker that debuted in 1931