Grilled Roast Marinade - cooking recipe

Ingredients

1/2 c. strong coffee
1/2 c. soy sauce
1 Tbsp. Worcestershire sauce
1 Tbsp. cider vinegar
1 large onion, chopped
meat tenderizer

Preparation

This will marinate a 3 to 5 pound roast.
Pierce roast and rub in meat tenderizer.
Mix all other ingredients together.
Pour over roast.
Place in an airtight container for 24 hours.
Grill for 20 minutes for medium rare or longer for medium to well done.