Put the bean sprouts in a heatproof container, cover with plastic wrap and microwave for 2 minutes at 500 - 600 W. Cool with running water, and drain very well.
Rehydrate the dried wakame with water, squeeze out the excess moisture and cut into easy to eat pieces. Roughly chop the egg.
Mix all the ingredients together except for the toppings.
For this version I used shrimp. Sprinkle the shrimp with a little sake and katakuriko, blanch in boiling water and season with salt and pepper.
Story Behind this Recipe
I made a variation of this side dish with Mixed Komatsuna and Boiled Egg (Recipe ID: 870137) using bean sprouts and wakame seaweed. It's an inexpensive recipe that you can make with ingredients you have on hand.
Try adding some thinly sliced carrots for color. Mix the carrot with the bean sprout on the same plate and microwave. Instead of mixing everything together, leave some things to put on top as accents to make it look more appetizing. When you have lots of toppings, add some extra seasoning.