Shallots in a Tamarind Sauce

Name: Shallots in a Tamarind Sauce
Ingredients: 1 tablespoon light tasting vegetable oil; 0.5 teaspoon cumin seeds; 0.5 teaspoon mustard seeds; 15 fenugreek seeds; 10 curry leaves (fresh or dried); 2 cloves garlic – crushed; 10 grams root ginger – peeled and grated; 1 red chilli – finely chopped; 15 shallots – peeled; 1.5 tablespoons tamarind paste; 375 millilitres boiling water; 0.5 teaspoon chilli powder; 1 teaspoon coriander-cumin powder; 0.25 teaspoon salt; 7 grams jaggery or brown sugar; Small handful chopped coriander leaves