Add butter to a pressure cooker / pan.
Now add one bayleaf, green chili, garlic cloves, ½ portion of tomato, few coriander stems and 1 tbsp moong dal to this.
Saute for a minute and add chopped drumstick. I used 1.5 drumstick.
Add 1 cup of water, little salt, turmeric powder and fennel seeds
Cover and close the cooker.
Pressure cook for 3 whistles
Open the cooker once the pressure subsides, cool everything
Grind everything
Add 1 cup water while grinding
Strain this well
Add water while straining
Discard the fibre
Add salt, pepper powder and mix well.
Let this boil and switch off
Drumstick soup is ready