Beef

Heat oil in a skillet over medium-high and sear steaks seasoned with salt and pepper until desired doneness
Transfer steaks to a plate and set aside
Return skillet to high heat and reduce beef stock to 1/2 cup, then reserve
Return skillet to heat, melt butter, and cook minced garlic and finely diced shallots until soft
Add mushrooms and cook until they release liquid and begin to brown
Add brandy and flambé, cooking until the flame dies down
Stir in reserved stock, heavy cream, Dijon mustard, Worcestershire sauce, and Tabasco
Return steaks to the skillet and cook, turning in the sauce, until warmed through and sauce thickens
Transfer steaks to serving plates, stir parsley and chives into the sauce, and pour sauce over steaks