When steam is not coming out of vent anymore, open the lid. Add onion, honey, maple syrup, salt, pepper, dried mustard, paprika, ginger, and apple cider vinegar (if using).
1 medium Spanish onion, 1/4 cup raw honey, 1/3 cup maple syrup, salt to taste , ground pepper to taste, 2 tsp dried mustard, 1 tsp Spanish paprika, 1/2 tsp ground ginger, 1 tbsp apple cider vinegar