Rinse rice with few changes of water and soak for 30 minutes.
Then boiled rice and drain all excess water. Set aside
Place chicken in a large bowl. Add yogurt, black cumin, black pepper, hot spices powder, plums, red pepper powder, star anise, cinnamon stick, ginger garlic paste, and few drops of biryani essence.
Mix well and marinate for 30 minutes.
Heat oil in a cooking pot. Fry potatoes for 10-12 minutes.Remove from the oil and keep aside.
Now add marinated chicken. Cover and let it simmer for 20 minutes or until chicken is tender.
Add potatoes and cook for 5-8 minutes or until tender.
Now take a heavy bottom skillet, layer rice, chicken masala, fried onions, mint leaves, green chilies, yellow color and boiled eggs.
Cover the skillet and cook on low flame for 20 minutes or until done.
Stir well and dish it out. Egg and Chicken Biryani is ready to serve.