In a pan, melt butter in olive oil. Sprinkles the meat with spices. Sear the meat both side (4 minutes). Put in the crockpot. In another pan cook the pancetta.

In the same pan that we cook the meat, cook the oignon on medium heat for 15 minute. Add salt pepper and garlic and cook another 2 minutes.

Deglaze with the beer (or broth), and let reduce for 3 minutes. Add the Demi glace and Worcestershire sauce then put in crock poor. Add the Rosemary

Cover and cook 7 hrs on medium high