3-5 lb. roast (I use eye of round) (any beef is fine)
1/2 c. strong coffee
1/2 c. soy sauce
1 tbsp. Worcestershire sauce
1 tbsp. vinegar
1 lg. onion, chopped
Tenderizer

Sprinkle meat with tenderizer. Mix ingredients and pour over roast. Marinate overnight or for several hours. Turn meat every few hours. Cook on grill. (Oven does not lend the same flavor.)