Peel the kohlrabi and cut into very fine pieces. Cut the dill or parsley into small pieces.
Heat the oil and fry the thawed shrimp in it for 1 to 1.5 minutes. Then take it out of the saucepan and sauté the kohlrabi in the saucepan. Add the vegetable stock and bring the soup to a boil. Cook for 5 minutes and then puree with a hand blender or blender.
Add the shrimp, season to taste and just cook for a short time. Finally stir in the sour cream and herbs.