Wash cucumbers and tomatoes under cool running water. Slice cucumbers and dice tomatoes before placing them in a large bowl.

Combine cucumbers, tomatoes, and finely sliced red onion in the mixing bowl.

In a separate bowl, whisk together olive oil, vinegar or lemon juice, salt, and pepper, adding garlic if desired.

Pour dressing over the vegetables and toss gently to coat without mashing tomatoes.

Mix in freshly chopped herbs to add aromatic freshness.

Let sit at room temperature for 10-15 minutes or chill in the refrigerator before serving.