Whatever - curried butter beans are far and away the best imo, but any curry is pretty damn good. Just don’t include much loose sauce/gravy in the jaffle. Perfect for using up leftovers. If all you have is sauce, then soak a piece of bread in it and chop it up and include that in the jaffle. One of my boys really likes leftover fried rice with a dribble of soy in a jaffle.