Boil the potatoes and then peel them. Cut into even slices and place in a bowl.
Heat the bacon with a little clarified butter in a pan, deglaze with the balsamic vinegar, fill up with the stock and stir in the mustard. Let everything boil down for a while (10-15 minutes), then season well with salt and pepper. Put the hot marinade on the potato slices and mix well, then add the vegetable oil and mix again. Add the chives, season to taste again and serve.
Tip: If you don`t have fresh chives at hand, you can soak dried chives rolls in the vegetable oil and then add both.