Cucumber frisee salad with strawberries

Rinse cucumber and cut into thin slices. Rinse lettuce, trim, shake dry and tear leaves into bite-sized pieces. Rinse lemon in hot water, wipe dry and finely grate zest. Squeeze juice from lemon. Rinse strawberries, cut in half and marinate in a bowl with half of lemon juice. Arrange lettuce leaves on plates, cover with cucumber slices and then decorate with marinated strawberry halves. Rinse dill, shake dry and chop finely. Mix vinegar in a bowl with oil and remaining lemon juice and season with salt and pepper. Drizzle vinaigrette over the salad.