Tomato Cucumber Onion Salad

1 cup diced cucumber

1 cup diced fresh tomato

½ cup olive oil

½ cup red wine vinegar

¼ cup diced red onion

1 teaspoon white pepper

1 teaspoon salt, or to taste

Toss cucumber, tomato, olive oil, red wine vinegar, red onion, and white pepper together in a large bowl; season with salt. Refrigerate until slightly chilled, 10 to 15 minutes.