Tear apart the Frisèe, cut large leaves and wash. Clean lamb`s lettuce and rinse under running water. Cut the salmon slices into even strips (about 1/2 centimeter wide).
For the dressing, mix salt, pepper and sugar with vinegar, and finally beat in the oil with a small whisk.
All salad ingredients can be prepared the day before, when the field salad and frisis salad are cooled with the last dripping water in a tightly sealed salad container and the salmon strips are covered in the refrigerator - as is the dressing, which should be beaten through again before being distributed on the plates.