Prepare the Vegetables:Slice 3/4 of a cucumber into thin rounds or half-moons, depending on your preference.Halve the plum tomatoes lengthways. Slice the red onion thinly to balance its flavour. Combine the Base Ingredients: In a large bowl, toss the sliced cucumber, halved tomatoes, red onion, and a handful of Kalamata olives.
Season the Salad: Drizzle the juice of one lemon over the vegetables. Sprinkle with 1 teaspoon of salt and 1 teaspoon of black pepper. Toss gently to coat everything evenly.
Add the Feta: Crumble feta cheese over the salad to your taste. Adjust the amount depending on how much you enjoy feta's tangy flavor.
Mix and Serve: Lightly toss the salad again to distribute the feta and seasoning. Serve immediately as a side dish or light meal.