When you don't have a cone, you roll with a wooden spoon handle, at least, in this neck of the woods.
A goro iron looks like this:
The description is that they are a cardamon cracker. Now I really want a goro iron...can't find an electric one...my Krumkake iron is one that is used over a burner (electric or gas). My Dad's Krumkake iron is an electric one and makes 2 at a time.