You will need
fresh chilis about 30, juice of half a lemmon, garic cloves to taste, a little coriander,3 tomatoes, salt, 2 table spoons of chili powder, tomato puree about 2 tablespoons, 2 small onions.
Finely chop half an onion and put in a small pan with some oil and start to sweat it, dont allow it to brown. In the meantime blend the everything else. Except for the spices, lemmon and puree. Now add the blended veg to the pan of sweated onions. Add the spices and puree ad allow to simmer on a low heat covered for 20mins , stir well and add the jucie of lemmon allow to cool and you can frezze jars of it if you have made too much as it will start to cool in hotness from the 3rd day after so best eaten with in 3 days.