I want to make this dish at home as I had it at Moti Mahal years ago and thought it was fabulous:

https://www.facebook.com/note.php?note_id=177674444454

I have everything but vermicelli which I couldn't find at my local Tesco today. Two questions I guess - the ingredient list specifically calls for 'roasted' vermicelli, so not sure what that means, and since I couldn't find it anyway, is there an easy substitute, or would that defeat the whole purpose?