Place a small cup in the centre and place a piece of hot coal inside it. Add a spoon of ghee or oil. Once you see smoke come out, tightly cover it immediately.
Cook on a low flame for 15 minutes. If you don't have a heavy bottomed pot, keep your pot on a tava or skillet with the flame on. This prevents the bottom from burning. Once 15 minutes are up, turn off the flame and rest for 10 minutes.