This salad gets a citrusy lift from fresh tangerines and its dressing. The crisp, cooling texture and flavor of the cucumber make this a great salad for sharing at a late-summer barbecue, where it can serve as a side dish or main. Sumac—a spice often featured in Middle Eastern cuisine—provides a delicious, almost sneaky zing.
In a serving bowl, mix the cucumber and beans. Dust with the ground sumac and toss the mixture.
In a small bowl, whisk the olive oil with the tangerine juice.
Add the parsley to the serving bowl and then drizzle the dressing over the salad. Season to taste with salt and pepper. Add the tangerine segments and toss lightly to combine. Serve chilled or at room temperature.
This salad can be assembled in advance without parsley and refrigerated for a day. Add the parsley just before serving.