Heat the oil, saute beef cubes and onions.
Add Paprika, salt and pepper, and vinegar.
Stir in the tomato paste and cook 3 to 4 minutes, stirring to incorporate.
Add caraway, marjoram, garlic, Ruby Red Wine and water.
Bring to a boil. Lower temperature, cover and simmer for 45 minutes.
Add diced potatoes and sliced mushrooms, simmer for 2 hours.