Cut the hard-boiled eggs, sausage and cucumber into small cubes. In the meantime, bring a generous 1/4 liter of strongly seasoned vinegar water to the boil and dissolve the gelatine that has been pre-soaked in a little cold water. Put the brine in the cold. Before solidifying, pour over the cubes of eggs, sausage and cucumber, stir in mustard and mayonnaise. Pour the strongly seasoned mass into cold rinsed cups and place in the refrigerator. After solidification, turn out and garnish as desired.
Pre-cooked vegetables can also be used instead of the sausage!