Carefully remove the individual leaves from the sour cabbage head. If the leaves are very thick, you can gently trim the tough central vein to make them more pliable for rolling. If the cabbage is too salty, rinse the leaves under cold water and let them drain.
Finely dice the onions, mince the garlic cloves, shred the carrots, cut the fresh tomatoes into small cubes, and dice the red pepper into small cubes. Finely chop the parsley and dill.
In a large bowl, combine everything and 6 tablespoons of rice.
Season the mixture generously with 2 teaspoons of salt, 1 teaspoon of black pepper, 1 tablespoon of sweet red pepper powder, and 0.5 teaspoon of turmeric powder. Mix everything thoroughly with your hands until all ingredients are well combined.