Lightly roast the nuts in a pan. Add the sugar and let it become liquid. Add butter and stir thoroughly. Put the whole thing on a piece of baking paper and let it cool down.
Mix yogurt, mustard, raspberry vinegar, a little water (1-2 tablespoons) with a little salt, pepper and sugar. Add the oil and stir everything into a sauce (works great in a shaker).
Roughly chop the cold nuts again. Fold about half of it under the Chinese cabbage. Add the sauce and stir everything through again. Put the remaining nuts on top of the salad.