I used Top Round which is less good than Brisket or chuck but leaner. I also added 2 diced jalapenos and I made the chili powder myself using this recipe
. You can either cook all of the aromatics (everything but the sugar, tomato sauce and lime juice) in the skillet or microwave them with the oil until softened. Put it in the slow cooker, then mix the sugar and tomato sauce and the salt and peppered meat. Then you cook on high for 6-8 hours. Top with the lime juice when serving.