2 tspchili powder, or to taste
1 tspdried oregano, crumbled
34 tspsalt
12 tspground cumin
2 lblean pork loin, trimmed, cubed
2 tbspbutter
2 tbspvegetable oil
3 clovesgarlic, minced
1medium onion, chopped
12 cupbeef stock
1 tbspfirmly packed brown sugar
3–4jalapeno chiles, seeded and minced
6medium green onions
3medium tomatoes, seeded and chopped
1 cupcooked corn
 sour cream
 lime, cut in wedges

Preheat oven to 350°F.

Mix chili powder, oregano, salt, and cumin in large bowl. Add pork and toss to coat. Melt 1 tablespoon butter with 1 tablespoon oil in heavy 3­quart flameproof casserole over medium­high heat. Add meat in batches and cook until brown on all sides, adding remaining butter and oil as necessary. Transfer to large plate with a slotted spoon. Add garlic and onions to casserole. Cook over medium­high heat until onion begins to soften, scraping up any browned bits, about 3 minutes. Stir in pork, stock and sugar. Cover, transfer to oven and bake until meat is tender, about 1 hour. (Can be prepared 2 days ahead, covered and refrigerated or 3 months ahead and frozen. Bring pork stew to room temperature before continuing.) Stir chiles, green onions, tomatoes, and corn into casserole. Continue baking until heated through.

Serve with sour cream and lime wedges.