Prep time: 15 minutes. Cook time: 0 minutes. Optional resting time: 5–10 minutes. Total time: 15–25 minutes. Servings: 4–6. Nutrition estimates assume six servings and include the complete olive oil dressing. Choose fresh, firm cucumbers and ripe cherry tomatoes. English or Persian cucumbers work especially well because of their tender skins and small seeds. Regular cucumbers also work; peel thick skins and remove large watery seeds if desired. Halve cherry tomatoes to expose their juicy centers. Dice red bell pepper into small, evenly sized pieces. Slice red onion thinly or dice finely to distribute its flavor evenly. For a milder onion flavor, soak slices in cold water for approximately five minutes and drain thoroughly. Wash and dry all vegetables before mixing to avoid diluting the dressing. Whisk extra-virgin olive oil, fresh lemon juice, salt, and black pepper immediately before adding to the vegetables. Let the salad rest briefly for 5–10 minutes to blend flavors. Avoid dressing the vegetables too far in advance because salt draws out moisture. Optional additions include crumbled feta, sliced Kalamata olives, cooked chickpeas, diced avocado, fresh basil, dill, mint, or a small amount of honey in the dressing. For meal preparation, refrigerate prepared vegetables and dressing separately and combine shortly before serving. Refrigerate leftovers promptly at 40°F (4°C) or below in an airtight container and enjoy within approximately two days for best quality. Drain excess liquid before serving leftovers if necessary. Freezing is not recommended because cucumbers and tomatoes lose their crisp texture after thawing.