Rinse the bulgur in a colander with cold water, scald the tomatoes with boiling water, rinse in cold water and peel them, remove the stalk, dice the tomatoes, finely dice the onion.
Heat the butter in a saucepan, add the onion cubes and sauté, stir in the tomato paste, stir in the bulgur and fry briefly, add the tomato cubes, powdered bread and salt and fill up with the broth, bring to the boil and then let it swell over low heat with the lid closed for 10 minutes. Remove from heat and let steep for another 10 minutes.