3 tenderloin mustard chive crust Recipes

vertically sliced onion, halved, seeded, and vertically sliced kumquats, carrot juice or orange juice, dijon mustard, salt, thyme sprigs, bay leaf, rice vinegar, olive oil, freshly ground mixed peppercorns or black peppercorns, beef tenderloin steaks, trimmed (about 3/4 inch thick ), salt, fresh chives (optional)

pork tenderloin , trimmed of fat and silverskin, grainy mustard, garlic clove, minced, chopped chives, canola oil