Possible Clues:

• Slush Puppie company
• Slushy summer treat
• Beverage with brainfreeze potential
• Cold, slushy treat
• Drink company with a polar bear mascot
• Drink brand with a polar bear in its logo
• Slushy drink at Burger King
• "Still cool after all these years" sloganeer
• Brand served with a spoon straw
• Maker of the Arctic Blast frozen drink