In a bowl mix ragi flour, rice flour, gram flour, cumin seeds, sesame seeds, salt to taste and two tablespoon of hot oil.
Make a smooth dough with warm water. The dough should not be very tight or the murukku or chakli will break. It should not be too lose or the chakli or murukku will be shapeless.
Rest the dough for 20-30 minutes.
With a murukku maker make murukku on a plate or butter paper.
Heat oil in a pan and fry 2 or 3 murukku at a time on medium flame until crispy.