The best potato salad without mayonnaise! Recipe from a German grandmother!

Potatoes-1 kg.
Smoked ham -125 gr.
Onion-70 gr.
Mustard-1 tbsp.
Broth (beef, chicken, vegetable) - 250 ml.
Vegetable oil-3 tbsp.
Vinegar (9%) - 1 tbsp.
Green onions.
Black pepper.
Salt.
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Boil potatoes in salted water.
Peel off the skin while still hot.
Fry the ham and onion in vegetable oil.
Add boulbon and let simmer for one minute.
Turn off the heat, add mustard and vinegar.
Chop the potatoes and combine with the dressing.
Add green onions, salt and black pepper.
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Bon appetit everyone!