1 cup chicken stock, preferably homemade, low-sodium if otherwise
1/3 cup low-sodium soy sauce
1/3 cup sugar
2 tablespoons mirin
2 tablespoons sake or white wine
4 to 6 pieces bone-in skin-on chicken thighs, drumsticks or wings or four 6-ounce skinless, boneless chicken breasts, lightly pounded, or 1 chicken cut into 8 pieces