Wash the cucumber and peel thinly with a peeler. Cut the cucumber in half lengthwise. Scrape out the seeds with a spoon. Cut cucumber into slices. Peel and cut the vegetable onions into eighths. Peel the skin from the sausage.
Cut the sausage into slices. Heat oil. First fry the sausage, then add the onions and finally the slices of cucumber. Let simmer for about 5 minutes. Wash and dab dry the dill and cut it into small pieces, except for something to garnish.
Deglaze the sausage pan with a cup of cream and bring to the boil. Add the dill. Stir in the sauce thickener and let it simmer a little longer. Wash, dry and halve the lemon. Squeeze half of it, the other half in slices, quarter them.
Season sausage pan with salt, lemon pepper and lemon juice. Fold in lemon quarters.