Wash cucumbers thoroughly and dab dry. Layer them in a bowl and sprinkle each with salt. Cover and leave to stand for about 12 hours.
Onions peel, halve. Wash, peel and slice the horseradish. Wash dill and dill flowers, shake dry. Cut dill coarsely. Wash cucumbers, dab dry. Layer with onions, horseradish, dill and other spices in prepared twist-off jars
Bring vinegar, 2 l water and sugar to the boil. Stir in the preserving aid. Cover the cucumbers immediately. Close the jars. Store in a cool place for about 2 weeks.
Pour off the stock, bring to the boil again and pour over the gherkins. Close the glasses. Store in a cool place for at least 4 weeks