I have always used dried methi in my curries, and as for seeds only used them in dried mixes. Never thought of grinding them then adding to curries will give that a go,as dopiaza is one of my favourite dishes.The onion preparation for a dopiaza is quite important and to get that right sweetness coming out of the onions always fry until nearly golden brown take half out then keep frying until just about to turn crispy add to curry then i add the rest of the onions just to warm them really,but will try the frozen methi for dopiaza cheers for the heads up on it.