4 pounds first cut brisket of beef
3 cloves garlic, slivered
3 cloves garlic, crushed
4 large onions, thinly sliced
1 cup apple cider vinegar
1 1/2 tablespoons bacon fat
1 cup strong black coffee
Salt and pepper, to taste
1/2 cup water
With a long thin, sharp knife, make slits in the meat and insert the slivers of garlic. Place the meat in a bowl, spread 1 sliced onion and the crushed garlic over the meat, and pour in the vinegar. Marinate for 6 hours at room temperature or overnight in the refrigerator, turning several times.
When ready to cook, preheat the oven to 350 degrees F.
Heat the bacon fat in a deep, heavy skillet large enough to hold the brisket. Remove the brisket from the marinade and discard the onion and vinegar. Dry with paper towels. Brown the meat well on all sides. Remove brisket to a platter.
In the fat remaining in the skillet, saut