Mix all ingredients and let rest for 30 minutes.
Fry meat. Add onion and continue to fry. Add 50 ml water and simmer until liquid is gone. Add Cabbage and ketchup and 100 ml water. Continue to simmer 15 minutes.
Roll out the strudel dough into a rectangle. Spread oil on dough, then add the meat filling and spread it evenly on the rectangle and roll up.
Bake at 350 F until done. Cut into slices.