Dice the zucchini, season with salt and leave to stand overnight. Then express it.
Let the zucchini, silver onions, onions, 6-8 peppers, sugar, vinegar and mustard cook for a good half an hour. Mix the flour in a little cold water, mix with the curry, cayenne pepper and 2-3 tablespoon hot paprika powder and stir in. Cook everything for another 10 minutes.
Immediately pour into glasses and let stand upside down for 5 minutes. Store in a cool place.