So this is what I did whith the other half of yesterday's beef. Today is friday, THE BIG night, the night when I go out to meet all my friends. We don't come back home before midnight, so this is not the perfect time for an extensive and long cooking session. I usually prepare something that can be ready to eat in a few minutes, fish for example. I had this beef marinating in teryaki sauce in the refrigerator, I put it on skewers and prepared rice. When we will come home tonight I will grill the skewers on a fantastic vintage 1970's grill while pouring sauce on the meat so it will not get too dry.
The marinade: I mixed togheter soy sauce, garlic, mirin, red wine, sugar, ginger and a little hot pepper (my taste). I just put the beef in it, quite simple.
Grill and ready to eat!