• ½ cup mirin (sweet Japanese rice wine)
• ½ cup zarame sugar or demerara sugar
• 1 lb. skin-on, boneless chicken thighs or 1 lb. ground dark-meat chicken and 2 Tbsp. chicken fat
• ½ small onion, finely chopped
• 2 tsp. Diamond Crystal or 1¼ tsp. Morton kosher salt
• 1¾ tsp. mirin (sweet Japanese rice wine)
• 1½ tsp. finely grated yuzu or lemon zest
• 1 cup glutinous sweet rice flour
• Shichimi togarashi and lemon wedges (for serving)
• Ten 6" bamboo skewers, soaked at least 1 hour, or metal skewers