Begin by washing all your fresh produce thoroughly under cold water.

Chop the cucumber, tomato, and red onion into bite-sized pieces and place them in a large mixing bowl.

Finely chop the cilantro and add it to the bowl with the vegetables.

In a small bowl or jar, combine lime juice and olive oil. Whisk or shake until well mixed.

Drizzle the dressing over the chopped vegetables and season with salt and pepper to taste.

Toss all the ingredients gently but thoroughly to combine the flavors. Serve immediately or let it sit for a few minutes to enhance the taste.