Lime wedges
Sour cream
Kosher salt
1 1/2 tbsp. Distilled white vinegar
1 tbsp. Dark brown sugar
2 tbsp. Corn tortilla flour
2 1/4 cups Water
2 cups Beef stock
3 cloves Garlic, minced
1/3 cup Finely chopped onion
2 1/2 pounds Boneless beef chuck, well trimmed and cut into 3/4-inch cubes
5 tbsp. Lard, vegetable oil, or rendered beef suet
1/2 tsp. Freshly ground black pepper
1 1/2 tsp. Ground cumin seed
2 oz. Dried, chiles combination (6 to 8 chiles)