Cut the cabbage into quarters, remove the stem, and then cut into very thin stripes.
1 Cabbage
Dice the onion very small.
1 Onion
In a saucepan, combine the onions, vinegar, oil, salt, and sugar.
125 ml Oil, 250 ml Apple Cider Vinegar, 100 g Sugar, 6 g Salt
Bring to a boil and take of the stove.
Add the mustard to the saucepan, stir, and then pour over the cabbage strips.
1 tsp Mustard
Mix very well.
Cover the bowl with a plate, weighing the cabbage down, and let soak in the fridge overnight.
Remove from the fridge about 20 minutes before serving, taste if more salt or other spices are needed. Decorate with some parsley or chives or some tomato sllices for a little color.