1/2 cup distilled white vinegar or apple cider vinegar
1/4 cup vegetable oil
1/4 cup sugar
2 teaspoons salt
1 tablespoon freshly ground black pepper
3 cucumbers peeled and sliced into 1/4-inch thick rounds
3 tomatoes cut into wedges
1 onion sliced into rings
Instructions
In a large mixing bowl, whisk together water, vinegar, vegetable oil, sugar, salt, and pepper. Continue whisking until the sugar and salt are completely dissolved.
Add the prepared cucumbers, tomatoes, and onions to the bowl. Toss gently to coat the vegetables evenly in the marinade.
Cover the bowl with plastic wrap or a lid. Refrigerate for at least 2 hours to let the vegetables absorb the flavors.
Stir the salad to redistribute the marinade before serving. Serve chilled as a side dish.
Notes
For extra flavor, add a few sprigs of fresh dill or a pinch of red pepper flakes to the marinade. Store leftovers in the refrigerator for up to 3 days.