Cut your tempeh into thin strips, or cubes, depending on your preference. Now, depending on the type of tempeh you've got, you'll need to sautée or air fry the tempeh. If your protein is already cooked, simply set aside.

Prepare the teriyaki sauce by combining all the ingredients for the sauce: soy sauce, mirin, sake, and maple syrup.

Bring the sauce to a simmer, and leave simmering for a few minutes before adding the cornflour slurry.

To make the slurry, simply add some lukewarm water to the cornflour and whisk until well combined.

Add the cornflour to the sauce, and mix well. You'll see that the sauce starts to thicken straight away.

Once the sauce has the right consistency (like syrup), add your tempeh and combine well.

Now, slice the radish, briefly cook or steam the edamame, and slice the cucumber. Also, I added some spiralized carrot, but you can add carrot sticks or sliced carrot.