Prep: 20 mins
| Cook: 3 hours
| Extra time: 30 mins, other
Over a medium heat, toast the cumin in a heavy bottom pan. Shake the pan for around 4 minutes until lightly toasted, let cool, then crush.
Toss the beef in the seasoned flour to coat, melt the fat in a heavy bottom pan, then add the steak in batches until browned on all sides. Remove the beef and set aside.
Add the onions and garlic to the pan and cook gently for around 5 minutes until soft. Add crushed chilies, oregano, paprika and cumin. Cook, stirring, for 2 to 3 minutes.
Return the beef to the pan, pour in lager, and add the chocolate. Bring to the boil, stirring all the while. Once boiling, reduce heat and cover. Simmer for 3 hours, or until the beef is very tender, adding more lager if need be.