Pancetta-Studded Beef Tenderloin

Ingredients

• 3 pound tied beef tenderloin trimmed at room temperature
• 0.1 teaspoon pepper black
• 0.5 cup cooking wine dry red
• 2 teaspoons kosher salt 
• 0.3 cup marsala wine dry
• 2 oz pancetta italian thinly sliced cut into 1/3-inch pieces ( unsmoked cured bacon)
• 2 tablespoons currant jelly red
• 0.3 teaspoon salt 
• 0.3 cup shallots finely chopped
• 1.5 tablespoons butter unsalted cut into bits
• 0.8 cup veal demiglace 
• 2 tablespoons vegetable oil 

Equipment

• bowl
• frying pan
• oven
• whisk
• sieve
• roasting pan
• kitchen thermometer
• aluminum foil
• cutting board

Directions

1. Preheat oven to 425°F.
2. Pat beef dry and cut 1/2-inch-deep slits at 1-inch intervals all over roast, then insert 1 piece of pancetta into each slit.
3. Sprinkle beef with kosher salt and pepper.
4. Heat oil in a 12-inch heavy skillet over high heat until just smoking, then brown beef on all sides, about 5 minutes.
5. Transfer beef to a small roasting pan, reserving skillet.
6. Roast beef in middle of oven until an instant-read thermometer inserted diagonally 2 inches into center registers 120°F, about 25 minutes.
7. Transfer beef to a cutting board and let stand, loosely covered with foil, 25 minutes. (Beef will continue to cook as it stands, reaching 130°F for medium-rare.)
8. Heat reserved skillet over moderately high heat until oil is hot but not smoking, then saut é shallot until golden, about 2 minutes.
9. Add red wine and Marsala and deglaze skillet by boiling, stirring and scraping up brown bits, until liquid is reduced by about one third.
10. Add demiglace and jelly and briskly simmer, whisking, until jelly is incorporated, about 2 minutes.
11. Add butter, 1 bit at a time, whisking until incorporated, then remove from heat.
12. Whisk in salt and pepper.
13. Pour sauce through a fine sieve into a bowl, pressing on solids.
14. * We use Demi-Glace Gold, available in specialty foods shops, some supermarkets, and by mail order from More Than Gourmet (800-860-938
15. or the demiglace/brown sauce from Citarella (212-874-0383).