This refreshing salad is a delightful medley of cucumbers, onions, and tomatoes marinated in a tangy vinaigrette. It’s perfect for summer picnics, barbecues, or as a light side dish. The crisp cucumbers, sweet tomatoes, and sharp onions soak up the flavors of the marinade, creating a vibrant and tasty dish that’s easy to make and incredibly satisfying. Growing up, this marinated cucumber, onion, and tomato salad was a staple at every family gathering. My grandmother would make it the night…