Grapefruit, Onion, and Basil Salad

Ingredients

• 2 grapefruits, trimmed of skin and cut into large slices
• 1/2 red onion, peeled and thinly sliced
• 1/3 cup pitted chopped black olives
• 1 bunch basil, leaves thinly sliced (about 1 cup)

• 2 tablespoons chopped chives
• 3 tablespoons aged balsamic vinegar
• 3 tablespoons extra-virgin olive oil
• Salt and freshly ground black pepper