The traditional proportions for this Spanish answer to the Grasshopper are one-third crème de menthe to two-thirds full-fat milk. The result is a minty...
I tried this due to its simplicity as I'm just getting started mixing drinks at home - it's nice and creamy, very easy to drink but it does feel like it's missing something. Perhaps it's my love of mint choc chip ice cream but I do think a chocolate element would benefit - plan to make a Grasshopper soon to see if that does the trick.