Oh, can I give you milkshake recipes. My dad used to make things for my mom's card club, like Creme de menthe parfaits, pink ladys and grasshoppers , so following in his "illustrious" footsteps, every year the day we close the DQ for the winter, I whip up a batch or 3 of shakes, freeze them and thaw when needed. Only problem was the year I didn't use them all up and my cousin thought the gallon of Brandy Alexander shakes was frozen marshmallow topping and put it in the topping crock out front. I don't have any idea how long we served "loopy sundaes".
Anyhow, you can make a Grasshopper shake in a blender with about ( and this is not rocket science, just bartender's eye it ) 4-6 oz. milk, a shot of Creme de menthe, and fill it the rest of the way up with ice cream and let her rip. You can make it either thick or thin or inbetween by the amount of milk you put in.
Brandy Alexander shakes are the same but you use a half shot each of Brandy and Creme de Caoco ( did I spell that right?). You can do this with about any drink you can imagine. The secret to a great "milk" shake is that you use milk and ice cream. A lot of the fast food places use a mix for their shakes that is basically just an ice cream mix run at a higher temperature so it's softer. That's why their shakes are always thick and they can't alter the consistancy. I know I like to be able to EASILY drink mine thru a straw. If I wanted to use spoon, I'd just get ice cream.
Have fun and experiment.
K./