Heat a pan and dry roast fennel seeds, fenugreek seeds, Mustard seeds.
Add roasted masala in a grinder along with dry mango powder. Grind it in to a fine powder.
Heat oil in a wok.
Add cumin seeds and let them crackle.
Add onions in it and saute until golden brown.
Add ginger garlic paste and soute for 5 minutes.
Add tomatoes in it and saute until oil separates.
Add salt and pepper and turmeric powder in it. Mix well.
Now add chicken minced in it. Mix well. It will release it's own water.
Stir occasionally until minced water dries and oil separates.
Add yogurt and achari masala in it. Mix well. Cover it and cook until done.
Add corriander leaves in it. Mix well and cook for five minutes.
It's ready.