These looked much better in the blog I got the recipe from. Thing is… can’t remember what blog it was :(
Anyway, this needs some finessing in how the topping works, but it’s a good start: https://docs.google.com/spreadsheet/ccc?key=0AlzqRgHX4AKHdDRZZnVYX3VNV0dWanJKZkpzaXV0cGc#gid=0