Tips:
1. Leaving boiled potatoes in water for longer will result in potatoes absorbing high amount of moisture and when you mix them for kofta, it will make the kofta dough watery. So, please remove the potatoes immediately after boiling, by rinsing pressure cooker in cold water to release the pressure quickly.
2. Keeping the grind vegetables in a paper towel helps in absorbing extra moisture from the vegetables and squeeze it before adding to the kofta dough. This would again help you keep your kofta dough dry. The extract can be used for the gravy mixture.
3. In case kofta dough really gets watery, you can add extra bread crumbs to make it dry.