Indian Cooking Recipe Hot And Sour Shrimps

Ingredients :
1 lb. shrimps, cleaned and de-viened
2 onions

For the smooth paste :
1 small piece ginger
10 flakes garlic
3-4 black peppercorns
1 tsp cumin seeds
6 red chillies
1/2 tsp turmeric pwd
1/2 cup thick tamarind
juice or 2 tbsp vinegar
Salt to taste
Cooking oil
Method :
Slice and fry the onions in the oil till done.
Add the ground masala and fry till the oil begins to separate.
Now add the shrimps and salt and some water and simmer for a while.
Bring to a boil. Add more vinegar if required and boil till done.