True Texas Chili

INGREDIENTS

• 1 tablespoon firmly packed dark brown sugar, plus more as needed
• 2 1/2 pounds boneless beef chuck, well trimmed and cut into 3/4-inch cubes (to yield 2 pounds after trimming)
• 3 large cloves garlic, minced
• 1 1/2 teaspoons ground cumin seed
• 1 1/2 tablespoons distilled white vinegar, plus more as needed
• 1/2 teaspoon freshly ground black pepper
• Kosher salt
• 2 tablespoons masa harina (corn tortilla flour)
• 2 cups , or canned low-sodium beef broth, plus more as needed
• Lime wedges
• 2 ounces dried, whole New Mexico (California), guajillo, or pasilla chiles, or a combination (6 to 8 chiles)
• Sour cream
• 1/3 cup finely chopped onion
• 5 tablespoons lard, vegetable oil, or rendered beef suet