Salmon in tamarind

Salmon fillets 500 grams, cut into medium pieces, tamarind concentrate 2 tsp., shallots 12, thinly sliced, ginger garlic paste 1 tsp., tomato 1, finely chopped, fish masala 1 tbsp., salt to taste, curry leaf a sprig, coconut oil 1 tbsp.
Heat oil in a wok, drop in curry leaves, shallots, sauté till tender, add tomato, sauté till tender, add ginger garlic paste, combine and allow to cook in low flame, add fish masala, sauté for 30 seconds, add tamarind diluted in 2 cups of water. Allow to boil, add fish pieces and allow to cook. If you like spicy add 2 or 3 red fresh chillies. Simmer flame and wait till the semi thick consistency.
Serve with rice.