Combine all ingredients "for paste" in a blender and blend into a smooth paste.
Add it to the mutton and marinate it for at least 1/2 an hour. The more it is left to marinate, the better!
Heat your pressure cooker. Add the oil to heat.
Saute shallots and onions till soft. Add the tomatoes and saute till mashed.
Now add the mutton along with all the marinade. Check the salt.
Close and cook till the mutton gets done - three whistles on high flame and 15 minutes on simmer normally does it for me. Allow the pressure to go by itself.
Open the lid and add the curry leaves, coriander and mint leaves. Adjust salt and pepper to taste.
Serve warm with chapathis, porattas or rice!