How to Make It
Fold together carrots, cucumber, pear, radish, lime juice, salt, and 1/4 cup ponzu in a large bowl. Set aside.
Arrange lettuce wedges, cut sides up, on a platter. Pour 1 cup ponzu over wedges, making sure to distribute ponzu into crevices of lettuce. Top wedges with carrot mixture, ground sesame seeds, soba-cha, and black pepper. Serve salad with remaining ponzu.