Well as you know these milkshake's are thick want to make one at home ?? Well you need the following...
1 Tub of Vanilla (walls cornish one is the best)
2 Semi Skimmed Milk
3 Nesquik Milkshake (strawberry, bannaa, chocolate etc)
First put 3 scoops of ice cream into a Pint Glass (important)
add a cup (not mug) of milk and add 1 or 2 tablespoons of Milkshake and stir vigarioulsy untill the mix is the colour of the Milkshake add more milkshake if required.. Then your done