For a richer flavor, consider using a high-quality apple cider. Adjust the amount of sambal oelek (or Sriracha) to your desired level of spiciness. A pinch of red pepper flakes can also be added for extra heat. Serve over steamed rice, quinoa, or cauliflower rice for a complete and satisfying meal. The apple cider glaze can also be used to marinate the chicken thighs for a more intense flavor. Marinate for at least 30 minutes, or up to 4 hours, in the refrigerator before cooking. Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop or in the microwave.