Heat 3 teaspoons oil in a pressure cooker.
Temper with mustard and cumin seeds.
Add curry leaves, green chilies, red chilies and crushed ginger. Saute for a minute.
Add chopped onions and saute well till they turn soft.
Add tomatoes, turmeric powder and garam masala. Saute till it turns mushy.
Add the thoroughly rinsed methi leaves. Saute well.
Pick and rinse the tur dal.
Add to the cooker along with methi leaves. saute for a minute.
Add 2 1/2 cups water and required salt.
Close the pressure cook and cook up to 4 whistles.
Open once the pressure settls down. Adjust consistency by adding some water if required.
Simmer for a minute, add coriander leaves and mix well. Serve methi dal hot.