Prepare the Vegetables: Shred the cabbage as finely as possible. This will ensure even cooking and a pleasant texture in the fritters. Finely chop the onion and grate the carrot. Combine all the vegetables in a large bowl.

Prepare the Batter: In a separate bowl, whisk together the eggs. Add the kefir or yogurt and whisk until well combined. Gradually add the flour, baking soda or powder, salt, and pepper. Mix until you have a smooth batter that coats the back of a spoon. Gently fold in the vegetable mixture, ensuring everything is evenly distributed.

Fry the Fritters: Heat enough vegetable oil in a large skillet over medium heat. The oil should be about 1/2 inch deep. Scoop out portions of the batter with a spoon and gently drop them into the hot oil. Flatten the tops of the fritters slightly with the back of the spoon. Fry for 3-4 minutes per side, or until golden brown and cooked through.

Serve: Transfer the cooked fritters to a plate lined with paper towels to drain any excess oil. Serve hot on their own or with your favorite dipping sauce. Chopped fresh herbs like parsley or dill make a lovely garnish.