Remove the base of the shimeji mushrooms and place in a small silicone steamer.
Sprinkle with salt, pepper, and sugar. Pour in the ponzu. Add the bonito flakes and roughly toss.
Close the lid of the steamer and microwave for 1 minute. Remove the lid and stir.
Cover with the lid again and heat for 1 more minute. Serve in a dish and enjoy.
Story Behind this Recipe
I ran out of frozen bento side dishes so I used the shimeji that I always have in the fridge to make a vegetable side dish.
The amount of time it takes in the microwave will vary depending on your microwave, so do 1 minute + 1 minute and if it still seems uncooked, microwave it for short intervals. Don't microwave it for 2 minutes straight, and stir in between. Adjust the amount of salt, pepper, and ponzu to suit your tastes. I used herbed salt this time.