These charcoal-grilled chicken skewers are a popular street food throughout Japan; there, the chicken may be joined by chicken gizzards and hard-boiled quail eggs. The sauce also works well on pork, fish, or beef. Prep and Cook Time: 35 minutes, plus at least 1 hour to marinate. Notes: You will need 8 wooden or metal skewers (10 in.) for this recipe; if using wooden, soak 30 minutes.