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Submitted by: Toni Smith from Monroe, UT
Originally shared on the web 03/08/2011

4 gal. water
2-oz. bottle root beer concentrate
4 lbs. sugar
4 lbs. dry ice

Combine water, concentrate and sugar in a 5-gallon plastic container; stir with a plastic spoon until sugar is dissolved. Wearing heavy gloves, carefully add dry ice. Stir until ice is completely dissolved and stops bubbling. Root beer will stay cool and fizzy if refrigerated or kept on the countertop in an insulated airtight container. Makes 4 gallons.