As I made it, this made a very large drink! I have to admit, I didn't measure the alcohol, just poured it in in equal measures, eyeballing it. I served this in a very large insulated glass, and there was still more than I could serve in one serving....so maybe you should plan on two servings, which is wonderful, because you will want a second serving!!! I used Bluebell, because I really prefer their ice cream to Haagen-Dazs. Just love their homemade vanillla and dutch chocolate. This made for a wonderful desert drink. Thanks for sharing!