ROOT BEER FREEZE (WHIRL)

ROOT BEER FREEZE (WHIRL)
http://www.yourhomebasedmom.com/root-beer-freeze-whirl/

We had this for FHE.  Yum! Yum!  This is how I did it:

Makes 4 (split the batch for vitamix but I think it would probably work not to split)

1.5 quart vanilla ice cream (we did vanilla bean)
2 cans root beer
1 tsp root beer extract


Here is the original recipe to make 2.
3 cup vanilla ice cream
1 cup root beer 
1/2 tsp root beer extract