Cut slits through the meat. Insert slivers of garlic and onion into roast. (I used 2-3 spoonfuls of chopped garlic.) Mix vinegar, mustard, bay leaves, chili powder and marjoram. Pour over meat. Make sure it runs down into slits where the garlic and onion have been placed. Cover and refrigerate overnight.
When ready to cook, place meat in a large heavy pot and well brown in oil on all sides. Pour in water and coffee and simmer on top of stove 4 to 6 hours. (I cooked mine in the crock pot on high for 6 hours. I also added the rest of the onion because why not?) If needed, additional water can be added. Salt and pepper 20 minutes before serving. The gravy may be thickened or left as is.
Great served as sliders with cole slaw!