Swabian potato salad

1. Boil waxy potatoes in their skins in salted water, peel while still warm and cut into thin slices.

2. Chop the onion very finely and bring it to the boil with the stock.

3. Add the vinegar, mustard, sugar, salt and pepper to the hot stock.

4. Pour the hot dressing over the still warm potatoes, toss gently and leave for 30 minutes to soak in.

5. Finally fold in the oil and adjust the seasoning - the salad should be glossy and juicy.

6. Before serving, mix in chives and thinly sliced cucumber and serve lukewarm.

Tip: The secret is warm potatoes and hot dressing: they soak up the flavour and turn creamy without any mayonnaise.