You need :
1/2 tsp butter
2 cups squid rings
1 large onion chopped
1/2 tsp mustard seeds
1/2 tsp red chili powder
1 tsp turmeric powder
1 small green chili slit
4/5 curry leaf
Tiny dash of vinegar
1 tsp coarse black pepper
5/8 garlic cloves
1/2 inch ginger
1/2 tsp cumin seeds
Marinate the squid with sea salt for 2 min then wash it 2/3 times.
Now the secret tip on how to cook squid.
Take a pressure cooker and add the squid along with 1/2 cup water, salt to taste, green chili and turmeric. Pressure cook for one whistle, boiling squid tends to give it a rubbery taste and the whole dish is ruined. Try this easy method and you will never go wrong.
Now for the pepper masala.
Start by crushing the garlic ,ginger and cumin together, make sure it is coarsely crushed. Keep aside.
In a pan add oil and the mustard seeds, allow to splutter. Then add in the crushed garlic, ginger and cumin. Saute for a min then add in the curry leaf ,chopped onion and cook till soft.
Now add in the red chili powder and cook another min. Add in the cooked squid and saute.
If there is liquid left from cooking the squid completely dry it up.
Once the squid is dry and well coated with the masalas add in the butter and few drops vinegar.
Now your done.