Take a pan put oil in it & add cumin seeds.Add onions & fry till golden brown.Now add gram flour & roast till it starts smelling. lower the flame of gas.
Now add red chilli powder, turmeric powder, coriander powder, chole masala & salt to taste. Add tomato(chopped finely) & water & cook till it forms gravy.
For aloo tikki, take boiled potatoes & mash it. Add salt, green chillies(chopped finely) & coriander & mix it well (add plain flour if needed).
Make small tikkies of it. Take a non stick pan, put some oil & roast the tikkies from both sides till golden brown.
For serving. take a plate, put tikkies & put chhole over it.
Then put curd, tamarind chutney on it. Sprinkle red chilli powder,salt on it. Garnish with onion & Coriander leaves & sev.