Method of preparation :
Peal ginger and cut into very small pieces. Cut the green chillies also into small pieces. Heat oil and sauté the 2nd ingredients for a minute. Add ginger and green chilly pieces and fry well and keep it aside. Put tamarind in two cups of water, squeeze well and take the liquid. Keep this liquid on fire adding the 4th ingredients.
Boil till the solution becomes thick. Add the fried ginger and chilly pieces, boil once more and remove from fire.