First, make the dressing: add vinegar, olive oil, oregano and salt to a small bowl and then whisk to combine. Set aside.

Slice the cucumbers and onion, and mince garlic then place them in a large mixing bowl.

Dice tomatoes, removing excess juice then add to your mixing bowl.

Add the dressing and toss to coat.

Add more Salt and pepper to taste if needed.

Refrigerate for at least an hour to let the flavors combine.