Here is a great recipe that I got from a wonderful teacher and friend. Mrs. Wilda McNatt who taught history at Hancock for 20 years before retiring. She was an awesome person. I think about her every time I fix this recipe.
2 large cucumbers, sliced or diced (I don't always peel them)
1 large red onion, sliced or diced
2 medium tomatoes, sliced or diced ( This recipe is also good with cherry or grape tomatoes. It is beautiful with the many colors of heirloom tomatoes as well.
2 T chopped parsley or parsley flakes
1/3 cup vinegar ( I like red wine vinegar best)
1/3 cup vegetable oil (I prefer canola)
1/3 cup sugar
1/2 tsp. black pepper
Place vegetables in a container that has a tight lid. Mix oil, vinegar, sugar and pepper in a bowl. Whisk until well blended. Pour over vegetables. Place lid on container and shake well. Refrigerate at least 4 hours. Overnight is better.
I have added black olives to the salad before.
There will be a great deal of the marinate left after the salad is enjoyed. I like to open a can of green beans and put in the leftover marinate and refrigerate again for 4 hours.