Peel the cucumber in strips and cut into thin slices. Sprinkle with a little salt, mix and set aside.
Warm the sugar with vinegar and soy sauce until the sugar has dissolved. Roast the sesame seeds in the pan until golden brown, finely chop the drained ginger. Add both to the sauce with 1 tablespoon of oil and allow to cool.
Squeeze out the cucumber and serve well mixed with the sauce.