Cut 2 tomatoes into bitesize pieces and place them in a bowl with a generous sprinkle of salt. Rest for 10 minutes.
Thinly slice 1 Japanese or Persian cucumbers and place them in a separate bowl. Sprinkle with salt and massage until evenly distributed, rest for 10 minutes.
In a small food processor, add 1 ½ tbsp toasted sesame oil, 1 tbsp rice vinegar, ½ tbsp Japanese soy sauce (koikuchi shoyu), 5 perilla leaves (shiso), 1 tsp ground sesame seeds and ½ tsp sugar. Blitz until smooth.
After 10 minutes, drain the water from the tomatoes and squeeze the cucumber thoroughly. Wrap the cucumber with kitchen paper and squeeze again to remove as much moisture as possible.
Arrange the tomato and cucumber in a serving bowl along with 50 g edamame and 4 tbsp canned sweet corn. Shred 5 perilla leaves (shiso) and place them on top.
Drizzle with the dressing right before serving and mix well until evenly coated. Enjoy!