What salad vegetable is often served with tomato and cucumber?

Let's break down why:

* Complementary Flavors: Lettuce provides a neutral base, allowing the bright flavors of tomato and cucumber to shine.

* Texture Contrast: Lettuce adds a crispness that contrasts with the juiciness of tomato and cucumber.

* Visual Appeal: The green of lettuce creates a visually appealing contrast with the red of tomatoes and green of cucumbers.

While lettuce is the classic choice, you can also find other vegetables commonly included in salads with tomatoes and cucumbers:

* Onion: Adds a sharp, pungent note.

* Red Onion: Offers a sweeter, more mild flavor than white onion.

* Bell Peppers: Add sweetness and color.

* Radish: Adds a spicy kick.

* Spinach: Provides a more earthy, robust flavor.

Ultimately, the best salad vegetables to pair with tomato and cucumber depend on personal preference and the desired flavor profile.