Wash the chicken pieces and add in ½ cup white vinegar, salt and 1 tbsp ginger garlic paste. Cook the chicken in its own water till the water dries. Now boil 4 degi chilies in some water and along with some white vinegar. When its color starts changing add in 1 piece of cinnamon and grind it. Then add in 1 tsp crushed black pepper and ½ tbsp crushed and roasted cumin seeds. Put the grinded masala in the wok and add in 1 cup clarified butter. Cook it. Fry the chicken separately and add it in the cooked mixture. Then add in lemon juice and cook it for 5 minutes more. Simmer and chicken ghee roast is reday to serve.