Slow-Cooker Citrus-Braised Chicken Tacos | America's Test Kitchen

Ingredients

• ¼ cup thawed frozen orange juice concentrate
• ¼ cup tomato paste
• 1½ tablespoons Worcestershire sauce
• 4 garlic cloves , minced
• 1 tablespoon ground cumin
• 1 tablespoon dried oregano
• 2 teaspoons table salt
• 1 teaspoon pepper
• 1 teaspoon ground allspice
• 1 teaspoon ground cinnamon
• 3 pounds boneless, skinless chicken thighs , trimmed
• 1 onion , halved
• 3 (3-inch) strips orange zest
• 2 tablespoons distilled white vinegar
• 18 (6-inch) corn tortillas , charred