Cucumber Salad in Vinegar

3-5  cucumbers ( regular cucumbers without peel or "striped")
1 red onion
1/2 c. white vinegar
1/2 c. water
1/3 c. sugar
dash of salt and pepper

Slice onions and cucumber very thin slices & place in shallow dish.
Stir together vinegar, water, sugar, salt, pepper and pour over onions and cucumber.
Cover and marinate at least an hour.
The longer this sits, the tastier it gets.
May be made a day ahead.