Make the salad. Halve the cucumber crosswise, then slice each half lengthwise to create a slit, being careful not to pierce any farther than its center. Spiralize both halves with blade a, then pat the noodles dry and place them in a large bowl. Add the jícama, carrot, scallions, radishes, cilantro, and basil. Pour the dressing over the salad and toss thoroughly to combine.