Possible Clues:

• 'The Freshmaker' candy
• Candy brand
• Candy that can create a soda geyser
• Certs alternative
• ''The Freshmaker'' candy
• They make diet cola gush
• "The Freshmaker" candy
• "Stay Fresh" candy
• Packaged candy once promoted with the slogan 'The Freshmaker'
• Candy often used in science fair volcanoes