I put all of this in a large Tupperware bowl and pop it in the freezer. I take it out and shake it every half hour till frozen.
6 (10 oz.) orange soda pop or 1 - 2 liter
You could use generic sweetened condensed milk. I use the 2 liter. Strawberry is good too. I figure it is .59 for the generic soda and .99 for each can of generic milk so not a bad treat.