- 1 cup water
- 1/4 cup white vinegar
- 3 tablespoons white sugar
- 1/2 cup sliced seedless cucumber
- 1/2 cup sliced red onion
- 1/4 head romaine lettuce, chopped
- 2 cups baby arugula
- 3 1/2 tablespoons olive oil
- 1 1/2 tablespoons balsamic vinegar
- salt and ground black pepper to taste
- 1/2 cup red seedless grapes, halved
- Whisk water, white vinegar, and sugar together in a bowl until sugar has dissolved.
- Stir cucumber and onion into the vinegar mixture; cover and refrigerate for 3 hours. Drain vegetables.
- Toss romaine lettuce and arugula with olive oil and balsamic vinegar in a large bowl. Season with salt and black pepper.
- Divide salad on 2 plates and scatter cucumber mixture and grapes on top to serve.