Wash and soak the horse gram and chana dal/ lentils in enough water overnight or for a minimum of 4 to 6 hours.
Drain and pressure cook the dalss until well cooked and yet not mushy in 4 cups water and 1 tsp salt for about 5-6 whistles.
Meanwhile boil the potato, peel and keep aside.
Once cooked, strain the lentils and keep the water aside. You can use this as a stock for soups separately.
Heat 1 tbsp oil in a pan and add the cumin seeds and fennel seeds. Let them splutter and add add the green chillies and the grated ginger. Mix and saute for about 2 mintes.
To this now add the strained lentils and keep stirring. Continue this process until no excess moisture remains. This may take about 8-10 minutes on medium flame.
Mix in the chili and black pepper powder at this stage. Remove from flame and let this cool.
In a mixing bowl, add the dal mixture, grated the boiled potato, add lime juice, coriander leaves, chaat masala powder, bread crumbs/ powdered oats and salt to taste.
Knead this mixture with gentle hands, mashing the mixture well at the same time.
Rub some oil on to your palms and shape this mixture into equal portion kebabs. I coud make about 10 medium kebabs out of this mixture.
Heat a cast iron skillet/ pan (preferably) and 2-3 tbsp oil of youe choice. Cook the kebabs over medium heat on both side until you see a nice golden sear. They'll be soft so please do handle with care.
Once cooked, remove onto a serving plate and serve hot with a chutney/ sauce/ dip of your choice.