Cucumber Salad

1/4 Cup vinegar or lemon juice
2 Tablespoons sugar
1/2 Teaspoon celery seed (optional)
4Medium cucumbers, halved lengthwise and thinly sliced
1 Small onion, thinly sliced and separated into rings
1 Teaspoon salt
Dash of pepper
Stir together vinegar, sugar, celery seed if desired, salt and pepper. Add cucumber, and onion slices and toss to coat. Cover and chill . Stir before serving. Serves 8.