Good point Ishbel. I never thought of that. I'm trying to think if there's something you could substitute for the liquer. I wonder if you could do some kind of coffee cream combination. What do you think?
hazelnuts are really good too, and they're not as expensive. although it's a pain to remove the skins. here's a recipe for vanilla hazelnuts. it's not as involved as it seems.
6 cups hazelnuts
1 vanilla bean
16 oz sugar