If you want to make dumplings with sauerkraut, will it be very sour? Sauerkraut wrapped dumplings is not necessarily very sour, depends on your own practice, if you do not want to eat too sour, you can cut the sauerkraut soak for a while, mixing filling with more oil, made out of the dumpling filling will not be very sour, if you like to eat sour, chopping filling when less washed a few times, made out of the dumpling filling will be very sour.