It is my search for this recipe that has led me here. My local curry house does a 'Sylhetey' which I presume is the same as a Sylheti, ie originates from the Sylhet region of Bangledesh.

All I know from the menu and tasting is the following:

It is a medium consistency dish cooked with onion, finely chopped green pepper, various spices, paprika, cumin, turmeric, fresh tomatoes, mixed pickles and worcester sauce (yes you did read that last bit right) served with fresh finely shredded tomatos and cucumber on top. It is very rich and tasty but of medium heat, and the pickles add a novel twist to the norm.

I don't recall an excessive level of garlic in the dish like some people seem to be suggesting, more incredibly rich and tasty flavours, presumably from the pickles (lime pickes?) and the worcester sauce. I have mine with Lamb Tikka in it and it is superb, but it is offered with meat or fish on the menu.

If anyone can point me in the direction of a definative recipe you would make a fellow Curryhead very happy!