Start with some besan - flour of garbanzo beans. Add some salt, spices, chili powder, ajvien. Add some water and mix into a paste to create the batter.
Chop some potatoes and spinach. Add to the batter and mix well. Usually you would really deep-fry this but you can use a pan and slightly less oil too. Drop in the mix in small chunks and let them cook. Ready to server with your favorite chutneys and sauces!