1 cup water
1/2 cup apple cider vinegar
1/4 cup vegetable oil
1/4 cup sugar
1 teaspoon salt
1/2 teaspoon coarsely ground black pepper
2 cucumbers, sliced
3 tomatoes, cut in wedges
1 sweet onion, cut into rings
In a large bowl, whisk together water, vinegar, vegetable oil, sugar, salt and pepper.
Add cucumbers, tomatoes, and onion and stir to coat.
Refrigerate for at least 2 hours. Will keep for 3 to 5 days.