For minced cabbage strudel, wash the white cabbage, coarsely chop and cut into fine strips.
Sauté the onions in melted butter. Add garlic and bacon cubes and fry them as well. Add the mince and sauté until the mince is cooked through and crumbly.
Add the white cabbage and fry for a few minutes. Then pour in the soup, season, add vinegar and simmer until the liquid has evaporated.
Lay out baking paper on a baking tray. Place the strudel dough on a clean dish towel. Place the cabbage mixture on the front third of the strudel dough and spread evenly. Now roll up the dough with the help of the tea towel, press the ends well together and place on the baking sheet.
Whisk the egg and milk and brush the strudel (also the ends) with it.
Bake in the oven preheated to 210°C for about 30 minutes.