Wash and peel the cucumber in stripes (for appearance, but you can peel it completely or leave the skin on). Slice it thinly. Place the slices in a bowl or colander and sprinkle with salt. Toss to coat and let sit to draw out excess water. Set aside while you prepare the other ingredients.

Finely chop the shallot (or green onions), garlic, and ginger. Place them in the bowl you’ll use to serve the salad.