Factors:
- 1 (3-pound) beef roast, trimmed of excess plump
- Kosher salt and freshly ground gloomy pepper
- 4 tablespoons olive oil, divided
- 8 oz. button mushrooms
- 2 puny onions, quartered
- 1 cup red wine
- 1 cup low-sodium beef stock
- 2 tablespoons gravy flour (quick: Wondra)
