Start by washing all your fresh ingredients thoroughly under running water. Dice the cucumbers, slice the tomatoes, and thinly slice the onions, ensuring they are evenly cut to enhance the salad's texture. Once done, transfer the vegetables into a large mixing bowl.

In a separate bowl or jar, combine the vinegar, olive oil, sugar, salt, and cracked pepper. Whisk or shake vigorously until the mixture is well blended and the sugar has completely dissolved.

Once your dressing is ready, pour it over the diced cucumbers, sliced tomatoes, and onions in the mixing bowl. Gently toss the mixture using a large spoon, ensuring that every piece of vegetable is lightly coated.

Cover the bowl with plastic wrap or a lid and place the salad in the refrigerator for at least 15-20 minutes. This resting period allows the flavors to meld beautifully.

After chilling, give the Cucumber, Onion, and Tomato Salad a gentle toss before serving. You can dish it up as a refreshing side or enjoy it on its own.