Ingredients
Instructions
- With a sharp knife tip, cut about 40 slits all over roast.
- Stuff each slit with a garlic sliver.
- In a small bowl, whisk together mayonnaise, horseradish, sage, salt and pepper, brush all over roast.
- Place onions in centre of roasting pan, place roast on top of onions.
- Roast in 325°F oven until thermometer registers 160°F for medium, about 2 hours.
- Transfer to cutting board and tent with foil, let stand for 10 minutes before carving.
- Skim fat from pan juices.
- Pour in beef stock and Worcestershire sauce, bring to boil, stirring scraping up brown bits.
- Whisk cornstarch with 1 tablespoon water, whisk into pan and cook, whisking until thickened and glossy, about 2 minutes.
- Strain and serve with beef.