Blend the juice, oil, vinegar, salt, and half a cup of mint in a food processor or blender

Set the wheat berries in a medium bowl. Pour the dressing over them and toss to coat. Stir in the orange zest. Set aside for at least 15 minutes. toss ocasionally

Meanwhile, core the unpeeled apples and cut them into quarter inch dice. Stack the remaining mint leaves and roll then into a log. Slice them as thinly as you can. Toss them into the salad along with the apples and hazelnuts. Add more salt, if needed.