Peel and chop the onions. Peel and finely dice the garlic. Dab meat dry and cut into cubes. Heat the fat in a roaster. Fry the meat in it for about 10 minutes. After about 8 minutes add onions and garlic
Deglaze with beer, bring to the boil and simmer for about 3 minutes. Add stock, bring to the boil. Season vigorously with salt, pepper and sugar. Spread slices of bread with mustard and put them on the goulash with the mustard side down. Stew in a closed roaster for about 1 1/2 hours until soft
Peel and wash the potatoes, cut them into thick chips and grate them dry in a tea towel. Heat frying oil to approx. 150 °C. Fry the French fries in it in portions for approx. 4 minutes
Season the finished goulash with vinegar, salt and pepper. Heat frying oil to approx. 170 °C. Fry the prefried French fries in this oil in portions for approx. 3 minutes until crispy. Season with coarse salt. Arrange goulash and chips