If you want to cook takeaway & resturant style curies then

This forum is great:

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Basically, what the takeaways do is boil a pan full of onions with a bit of white cabbage, carrot, red or green peppers for ages until the onions fall apart. Then use a blender on it to create a base sauce for nearly all their curries.

Posted By: Larry Hagman, Dec 28, 20:47:38