Clean, wash and devein shrimps/prawns. Add some salt and turmeric powder whilst cleaning.
In a small bowl, add some water and lemon juice and let the shrimp soak for 5 minutes. Turmeric, salt and lemon juice helps to remove any germs and odour from the shrimp. This cleaning method applies to all seafood.
Grind ginger and garlic into a smooth paste.
In a large kadai/wok, add oil.
When it is hot, add fennel seeds.
When they splutter, add finely chopped onion and salt and saute until it turns golden brown and reduces in volume.
Then, add turmeric powder and finely chopped tomato and saute until it turns mushy.
Add ginger-garlic paste and saute until oil separates.
Then, add red chilli powder and coriander powder and saute for a minute.
Add water and boil it for 2-3 minutes.
Add coarsely ground black pepper powder. Stir it well.