This is a standard item, but it's delicious, after all. It's a perfect highly nutritious, easy, simmered side dish.
I'm a little into macrobiotic cuisine these days.
Use your choice of ingredients. I like to add konnyaku to add volume. The dried shiitake gives a better taste, but if you don't have any on hand, use about 1 teaspoon dashi stock granules instead.
Enjoy Japanese food around the world.