One of our readers had given this suggestion. If you can get access to dried mexican peppers, then try getting morita peppers. They are similar to chipotles in that they are smoked jalapeno peppers, but these are smoked with a different method that leaves them with that fresh charcoal flavor. As a bonus, since they are less harshly dried, it leaves them with a nice fruity pepper flavor that blends very well with the tomatoes.