Cheap yet Tender Beef

In this economy we need ways to make the cheaper pieces of meat be tasty.

YES it sound very strange when you read it but TRUST ME when I say the beef will turn out VERY tender and flavorful in the end ... at least mine did :P

2-4lb cheap roast (generally the 7 bone roasts work VERY well).
Poke holes throughout the roast.
Put garlic cloves and chunks of onion in the holes.
Place in an air tight container and cover with vinegar (cheap distilled or apple cider) for 24-48 hours. Take out of liquid, pat dry, sear until brown almost burnt on both sides in a heavy pan.
Place in a roasting dish. Then add 2c of VERY strong coffee and 2c water. Put in oven at 250 degrees for 4-6 hours. IF you desire a gravy remove the meat from the pan. In a sautee pan make a roux; then slowly add the juice to your roux. Constantly whisking. Salt and pepper gravy to your tastes then serve with the meat.