Thoroughly clean, wash and spin dry the lamb`s lettuce. Roast the pine nuts in a coated pan until golden brown.
For the dressing: cut the onion into very small cubes. Mix the balsamic vinegar with white wine vinegar and pepper and salt (preferably with a small whisk), then stir in the pumpkin seed oil and add the onion cubes.
Mix the dressing and lamb`s lettuce in a large bowl and distribute on salad plates. Scatter the still warm pine nuts on top.