Heat oil and ghee in a heavy-bottom pot and add the ground onion paste. Saute until the raw smell disappears.
Add the prepared ground masala paste and saute it for 3mins . Then add turmeric powder and red chilli powder. Cook well until the oil begins to separate.
Add curd and mix well to form a rich masala base.
Add chicken pieces and sauté for 2–3 minutes so the chicken absorbs the flavors.
Pour 1½ cups water, add required salt and close the lid, and cook the chicken for about 10 minutes.
Add soaked seeraga samba rice and cook until the rice is partially done. Add a squeeze of lemon juice at the end for extra flavor.
Cover the pot with a lid, place a weight on top, and cook on low flame using the dum method for about 20 minutes.
Turn off the stove and allow the biryani to rest for 10 minutes before opening the lid.
Gently fluff the rice and serve hot.