These kababs are an amazing accompaniment to Pilaus and they can easily work as a sandwich filler, or just a snack with chutneys.
Boil the potatoes, peel and mash them. Add in the butter followed by all the other ingredients EXCEPT the egg. Mix well.
Shape into round patties. Refrigerate for about an hour (covered with cling wrap).
Dip in beaten egg and fry until golden brown, then blot in kitchen towels.