For the dressing, first mix the juice of half a lemon with balsamic vinegar and the spices until the sugar has dissolved. Then add the oil, then the sultanas. Mix everything well and let stand for about an hour.
Wash and spin dry the lettuce and chop it into bite-sized pieces. Peel the cucumber as desired and cut in half. Remove the stones and dice the pulp. Wash the tomatoes and also dice them.