In Medium Size Saucepan Over Moderate Heat, Heat Oil. Add The Onion And Saute Until Soft About 5 Minutes. Add Remaing Ingredients Except Beef. Bring To A Simmer. Remove Marinate From Heat And Cool. Place Beef In A Glass Or Ceramic Dis Just Large Enough To Hold It. Pour The Marinate Over Meat. Cover With Plastic Wrap And Refrigerate For 12 To 24 Hours Turning Meat Occasionally. Transfer The Beef To A Platter And Bring To Room Temperature Discard Marinate Or Pour Off Into Saucepan And Heat Serve As Gravy If Desired. Heat A Broiler Pan Or Bbq Grill. Broil Or Grill The Beef 3 To 4 Inches From Heat For 10 Minutes On Each Side.