Step 1

In a large pitcher (I use glass), stir together the water, sugar and root beer extract until the sugar is mostly dissolved. Take a little taste to see if you need more extract or sugar.

Step 2

In a well-ventilated area, carefully add the dry ice to the pitcher using insulated gloves or tongs and stir with a long-handled spoon so that the dry ice doesn't stick to the bottom and sides of the container. The root beer will bubble and the dry ice fog will spill from the container (cool!).

Step 3

Continue stirring until it is mostly melted, 10-15 minutes.

Step 4

Ladle into cups, avoiding any large pieces of unmelted dry ice, and serve.