For me, it's Rice, Rice, Rice. REC: Gyu Don (Beef and Onion Rice Bowl)
Gyu means meat (beef), and don is short for donburi, a rice bowl dish.
Japanese recipes are often about ratios, so the sauce ratio is 3:1:1 (water:shoyu:mirin), which makes it easy to scale up or down.
This one is super easy.
1 large onion, sliced vertically
1 lb. well-marbled beef, thinly sliced*
Sauce:
1 cup water
1/3 cup soy sauce
1/3 cup mirin (Japanese sweetened rice wine)
1 teaspoon ginger juice**
Cooked rice, for serving
* I used flap meat, and sliced it against the grain, as thin as I possibly could. I bought it at Costco, for about $5.00 a pound. If the name is unfamiliar, click on my link for an explanantion of the cut.
**I grated a 2" piece of ginger with a microplane grater, and squeezed the juice out of it
Combine the sauce ingredients in a measuring cup, and set aside.
Heat a saute pan over medium high heat. Add about 1 tablespoon of oil, then add onions. Saute until softened, then remove.
Add the beef, and saute until it is no longer red. (You may have to do this in two batches, so you don't overcrowd the pan.)
Return the onions to the pan, then add the sauce. Bring to a boil, then lower the heat and simmer for a couple of minutes, so that the sauce soaks into the beef and onions.
Serve hot, over bowls of rice with lots of sauce.
http://www.sfgate.com/cgi-bin/article.cgi?f=/chronicle/archive/2005/03/16/FDG2BBNBS01.DTL