01 -
Using a sharp knife or mandoline, slice Persian cucumbers as thinly as possible and place them in a medium bowl.
02 -
Sprinkle salt over the cucumber slices, toss gently to coat, then let sit for 10 minutes to release excess water. Drain and gently squeeze or blot with paper towels to remove moisture.
03 -
Whisk together rice vinegar, sugar, soy sauce, sesame oil, grated ginger if using, and crushed red pepper flakes in a small bowl until sugar dissolves and dressing becomes clear and slightly thickened.
04 -
Pour the prepared dressing over the drained cucumbers, tossing to coat slices evenly and glossy. Adjust seasoning to taste with additional sugar, vinegar, or soy sauce if needed.
05 -
Refrigerate the cucumbers dressed for 10 to 15 minutes to enhance flavor absorption. Just before serving, sprinkle toasted sesame seeds over the salad.