Ingredients
1 small red onion, thinly sliced
1/2 English cucumber, thinly sliced
2 beefsteak tomatoes, thinly sliced
1/2 cup pitted black olives
Sherry or balsamic vinegar, to taste
Extra-virgin olive oil, to taste
Coarse salt and freshly ground pepper
Preparation
In a medium bowl, combine onion, cucumber, tomatoes, and olives. Drizzle with vinegar and oil, as desired. Season with salt and pepper, and marinate 30 minutes. Serve chilled or at room temperature.