01 -
Salt steaks and let rest at room temperature 15-30 minutes.
02 -
Combine broth, Worcestershire, mustard, and tomato paste.
03 -
Sear in butter 1-4 minutes per side depending on thickness. Rest under foil.
04 -
Cook shallots in same pan. Add cognac, then sauce mix, then cream. Simmer until thick.
05 -
Pour sauce over steaks. Top with pepper and chives.