Wash duck breasts and pat dry. Heat oil in a pan. Fry duck breasts in it on the skin side for about 10 minutes at medium heat, turn and fry for another 10 minutes. Clean and wash salads, dab dry and, except for the lamb's lettuce, pluck into pieces. Remove duck breast and keep warm. Drain fat if necessary.
Deglaze the meat with orange juice and vinegar. Season to taste with salt, pepper and sugar. Cut the duck breasts into slices. Arrange salads and duck breasts on plates, pour some marinade over them. Add the rest of the marinade. Delicious with baguette