This makes approx one float.
Soda/Pop of choice (I use Dr Pepper or Coke-a-cola)
Vanilla Ice Cream
Milk
Get out a coffee mug and spoon, and measure out about 1/2 cup of vanilla ice cream. Add in just enough milk to make soft-serve icecream, but do not add in so much that you have the texture of a milk shake.
Move this over to the glass you wish to have your float in, and add in your soda/pop of choice. Serve with straw
I had one of these last night, and it was as the Dr Pepper Commercials used to say "Just what the doctor Ordered!"
Since we don't have Wendy's Fast Food here in Germany, this is the closest I can get to their Frosty Float.
http://en.wikipedia.org/wiki/Frosty_(Wendy's)