Cut the cabbage into thin strips. It is best to use a knife and not a food processor, otherwise the strips will be too fine.
Cook the cabbage for about 10 minutes in water with 1 tablespoon of salt, until it is soft but still firm to the bite.
Drain the cabbage and let cool a little. Quenching with cold water doesn`t do any harm if you want it to be quick. Add the sour cream, salt and pepper and mix everything well. Then put in the fridge until the salad is really cool.