Clean and clean the mushrooms and chop half of them. Peel and chop the onion. Clean and wash the bell peppers and chop half of them finely
Heat 1 teaspoon of oil in a coated frying pan. Fry the minced meat for 2-3 minutes while turning it over until crumbly. Add mushrooms, onion and paprika, fry for about 2 minutes, season with salt and pepper, remove from heat, let cool down a bit and stir in sour cream and let cool down
Clean and halve cabbage leaves and cut out thick veins. Cook leaves in boiling salted water for about 3 minutes, drain and rinse with cold water. Put the minced mixture on the cabbage leaves, fold the long sides over the filling and roll up. Fix with wooden skewers
Bring the tomatoes to the boil in a pot, season with salt and pepper. Add cabbage rolls and simmer covered for about 5 minutes
In the meantime wash and drain the salad. Slice the remaining mushrooms and cut the pepper into strips. Mix vinegar and 1 tablespoon of water, season with salt and pepper, fold in 1 teaspoon of oil. Mix salad, mushrooms, paprika and vinaigrette. Arrange on plates with rolls and sauce