Awesome Roast Beef - cooking recipe

Ingredients

1 (3 -4 lb) sirloin tip roast
1/4 cup soya sauce (I prefer Kikkoman)
2 tablespoons Worcestershire sauce
2 tablespoons red wine vinegar
2 tablespoons vegetable oil
1 tablespoon Dijon mustard
1 tablespoon brown sugar
black pepper

Preparation

Pat roast dry with paper towel.
Mix remaining ingredients together.
Slather all over roast I use a silicone brush.
Let sit a few (2 -3) hours at room temperature.
Roast in a preheated oven set at 500F for 10 minutes.
Without opening oven reduce heat to 325F and roast to desired doneness. about 20 minutes per lb. or to a an internal temperature of 125F for rare.
When done place roast on a platter and cover with Aluminum foil for about 15 -20min.
Meanwhile add 1/2 cup red wine to roaster and deglaze over medium heat. ( scrape up all crusty brown bits).
Place this in a saucepan and add 2 cups beef broth, and 1 1/2 Tbsp cornstarch mixed in about 1/4 cup cold water. Bring to the boil and stir till nicely thickened.
Check for seasoning.