Answer:
I make them like this:
For a small cup (this is not a small Shakeaway this is a small cup)
2 scoops ice cream (vanilla or Cornish)
A bit of milk (just a small bit)
and your chocolate/sweet/fruit etc.
ice cubes
(i suggest breaking up the flavor before you add it)
Then smooth it in a smoothie machine.
You will have to judge the amount of sweets depending on how strong you want it.