For the sake of simplicity, I like to use pre-cooked tubers. These are cooked, peeled and without chem. Preservatives vacuum packed. The shelf life is approx. 4 months.

Just cut the tubers into slices. Cut the onion into wafer-thin half or quarter rings.

Add all other ingredients, fold in well and let it steep.

Mix in the oil before serving. If necessary, season again. Don't be too frugal with caraway seeds.