heres a really good balti paste recipe.
5 -6 tb Coriander seed
2 -3 tb Cumin seed
2 3" pieces of cassia bark
2 -3 Habaneros or whatever you
2 ts Mustard seed
2 ts Fennel seed
3 ts Cardamom seed
1 ts Fenugreek(methi) seed
1 ts Lovage seed
1 ts Onion seed
1 tb Fenugreek (methi) leaves;
6 Bay leaves
25 Curry leaves; or more
Additional
2 tb Ground turmeric
1 tb Ginger powder
1 tb Chilli powder
1 pn Asafoetida
Roast the spices and allow to cool, grind to a powder, then add additional ingredients. Mix spices and place in a bowl, add 6-8 fl oz (175-250 ml) of vinegar. Mix the spice into the vinegar, adding water if needed to make a creamy paste. Let this stand for a while, 1/2 hour is best. Meanwhile heat 6-8 fl oz (175-250 ml) vegetable oil. Add paste to the oil, care is needed here as it will splatter very easily. Stir the paste for about 5 mins, do not let it stick. Remove from heat and stand for 5-10 mins, if the oil rises to the top the spices are cooked, if not add more oil and cook again for a while, dont forget to keep stiring. Bottle the paste, (sterile jars essential) and cap with hot oil.
Now although this recipe uses vinegar, i personally leave it out, working on the principle that ill have used it all in a week anyway and it stays fine in the fridge until then.
Its even better if you fry the spices with mustard oil and caremalised onions.