1 head Boston or leaf lettuce
4 med. cucumbers, sliced
4 c. coarsely shredded, peeled, raw beets
1/2 c. sliced onions

Just before serving, line shallow bowl with lettuce, arrange cucumbers over lettuce. Mound beets in center, sprinkle with onions. Serve with dressing.

DRESSING (MUSTARD VINAIGRETTE) :

3/4 c. vegetable oil
1/4 c. wine vinegar
1 tbsp. Dijon mustard
1/2 tsp. salt
1/2 tsp. pepper

Shake well.