How to Make It
In a bowl, combine the vinegar, olive oil, ketchup, Worcestershire sauce, 1/2 tablespoon of pepper and 3/4 teaspoon of salt.
Preheat the oven to 450°. In a nonreactive ovenproof skillet, heat the canola oil until shimmering. Set the venison racks bone side up in the skillet. Sear them over high heat, turning once, until browned, about 1 1/2 minutes per side. Put the skillet in the oven and roast for about 20 minutes, brushing the racks 3 times with the glaze, until the meat is rare and an instant-read thermometer inserted in the meat reads 125°. Cover with foil and let rest for 10 minutes. Season with salt and pepper.
Add the remaining glaze to the skillet and bring to a boil over high heat, stirring to scrape up the browned bits. Cut the venison into chops and serve with the sauce.