Preheat the oven to 450°F. Fill a medium pot 3/4 of the way up with salted water; cover and heat to boiling on high. Wash and dry the fresh produce. Medium dice the potatoes. Peel the carrots; halve lengthwise, then cut crosswise into 2-inch pieces. Pick the sage leaves off the stems; thinly slice the leaves.

Add the diced potatoes to the pot of boiling water. Cook 16 to 20 minutes, or until tender when pierced with a fork. Turn off the heat. Drain thoroughly and return to the pot. Add the buttermilk and 1 tablespoon of olive oil (or 2 tablespoons for 4 servings); season with salt and pepper. Using a fork or potato masher, mash to your desired consistency. Taste, then season with salt and pepper if desired.

Meanwhile, line a sheet pan with foil. Place the carrot pieces on the foil. Drizzle with olive oil and season with salt, pepper, and half the spice blend. Toss to coat; arrange in an even layer. Roast 16 to 18 minutes, or until browned and tender when pierced with a fork. Remove from the oven.

Air Fryer: Cook the carrots at 390°F for 9 to 12 minutes.

Meanwhile, pat the pork dry with paper towels. Season on both sides with salt, pepper, and the remaining spice blend. In a medium nonstick pan (or large for 4 servings), heat a drizzle of olive oil on medium-high until hot. Add the seasoned pork. Cook 4 to 6 minutes per side for medium (the center may still be slightly pink), or until browned and cooked to your desired degree of doneness. Leaving any browned bits (or fond) in the pan, transfer to a cutting board and let rest at least 5 minutes. Slice the rested pork crosswise.

The USDA recommends a minimum safe cooking temperature of 145°F for pork. 

Heat the pan of reserved fond on medium-high until hot. Add the maple syrup, vinegar (carefully, as the liquid may splatter), and as much of the sliced sage leaves as you'd like; season with salt and pepper. Cook, stirring frequently and scraping up any fond, 30 seconds to 1 minute, or until slightly thickened. (For a thicker consistency, continue cooking the sauce. For a thinner consistency, add 1 tablespoon of water at a time to loosen.) Turn off the heat. Stir in the butter until melted and combined. Taste, then season with salt and pepper if desired. Serve the sliced pork with the roasted carrots and mashed potatoes. Top the pork and potatoes with the pan sauce. Enjoy!