firstly, in a large cooker heat ghee and saute spices.
further, saute onions and ginger - garlic paste well.
additionally, add in mixed vegetables and saute till all vegetables shrinks.
now add in curd keeping flame on low.
also add in spice powder and salt to taste. mix well.
also add in coriander leaves, mint leaves and fried onions.
spread soaked basmati rice.
further sprinkle biryani masala powder and salt.
also place in coriander leaves, mint and fried onions.
additionally, pour in saffron water and ghee.
pour water and simmer for 25 minutes.
finally, serve veg biryani prepared in cooker along with raita.