I make my own mince from steak (that way I know what is in it). Brown mince first and sautee onions, I add cumin as well as the usual chilli and other herbs/spices, a dash of worcestershire sauce, (and I know this sounds odd but trust me) 3 dieced anchovy fillets, some beef stock, splash of red wine ( I have ice cubes of frozen stock and left over red wine for that purpose).
All that goes into the slow cooker with red peppers. The kidney beans and chocolate go in a couple of hours before we eat it, and the children like some tinned sweetcorn in there too.
Serve with rice, gaucamole, salsa, sour cream and grated cheese.