optional: Wrap 1 large cucumber with plastic to contain the possible mess if you smash too hard
Smash the cucumber using a meat tenderizer on a cutting board
Cut into bite-sized (1 1⁄2″) pieces
Toss the cucumber in the colander with 1 tsp salt and 1⁄2 tsp sugar to macerate
Refrigerate for 1⁄2–2 hours
Meanwhile, make the dressing by whisking together 2 cloves garlic, 1 tbsp rice vinegar, 1 tsp soy sauce, 1⁄2 tsp sesame oil, and 1 pinch red pepper flakes in a small mixing bowl
Assemble salad
When ready to serve, toss the cucumber in the dressing