Seasoned thinly sliced beef and onion over steamed rice
Slice onion thinly, and cut sliced beef in 2" width.
Boil Dashi in a pot and add sliced onion. Cook for 3-4 minutes. Add soy sauce, sugar, and Sake and cook another 3-4 minutes. Add grated ginger.
Add sliced beef in pot and stir. Cook about 5 minutes.
Pour meat and sauce over rice and top with pickled red ginger.