Self, when making krumkake do not touch the base of the krumkake iron with your bare fingers.
What I was making:
3 eggs, beaten
1/2 cup sugar
1/2 cup butter
1 tsp vanilla, or almond, or lemon, or cardamom
1/2 cup flour
Do the usual stuff with the butter and sugar, flour and eggs, and flavoring.
Cook a teaspoon at a time on a krumkake iron over low-ish heat until they are golden. Roll onto a tapered dowel while hot. Slide off the dowel. Sprinkle with powdered sugar if you must.