Heat oil in a pressure cooker. Fry the fenugreek seeds briefly. Add the onions and green chillies with a pinch of salt and saute till soft.
Add the ginger and garlic pastes and saute till the raw smell is gone.
Add the tomatoes and cook till mashed. Add in the powders and fry for around five minutes or till the coriander gives a darkish shade.
Add the beef, water and vinegar and adjust salt. Close the lid of the pressure cooker and cook on high for three whistles and on simmer for 15 minutes. Allow the pressure to go by itself.
Open the lid, switch on the flame. Sprinkle in the garam masala and cook on simmer for five minutes.
Add in pepper as required for your spice levels and switch off. Garnish with curry leaves and serve warm!