Peel ginger and garlic and chop very finely. Boil 1/8 litre water, soy sauce, sake, sesame oil, broth, sugar, ginger and garlic. Stir starch and 2 tablespoons of water until smooth. Stir into the boiling sauce and simmer for 2-3 minutes. Let cool off
Wash the duck breasts, pat them dry very well and prick the skin several times with a wooden skewer. Roast sesame seeds in a hot pan without fat. Remove
Fry the duck breasts in the hot pan over a high heat for 3-4 minutes on the skin side until the skin is crispy. Then turn and fry on the meat side for 3-4 minutes. Season with salt and pepper. Turn the duck breasts again and fry on the skin side for 3-4 minutes. Fry larger and thicker duck breasts on each side for 1-2 minutes longer.
Wrap in foil and let it rest for 3-4 minutes. Wash the chives, dab dry and cut into thin rolls. Cut duck breasts into slices of about 1 cm thickness. Pour Teriyaki sauce over them. Sprinkle with sesame and chives. Serve with jasmine rice