If preparing rice and/or noodles start those now. That way it all times out perfectly. We usually do both. I like rice and my daughter like noodles.
Cut up your beef. Pop it into a glass bowl. Pour Italian Dressing over top. Mix really well with a spoon. Let it stand for about 10 minutes.
While the meat is resting you can cut up your veggies. I like to dice my onions, then I like to have odd pieces that are a bit bigger, I find that the layering of textures with some onions being cooked soft and some with just a bit more crispness left is really amazing. I do this often with onions as well. about two thirds are cut into strips, and the other third of them I leave in chunkier pieces. The peppers I like uniformly cut into thin strips though. Just a personal thing.
Drain any excess marinade from the beef.
Now take a wok or large skillet and add some oil, I like olive oil but you can use canola or vegetable oil. Let that get hot, it should sizzle a bit and get this glimmer over the oil.
Now carefully add your beef, if the pan is small do it in two or three batches. Don't overcrowd when stir frying, the trick is to get a good hot sear which is impossible if the pan is overcrowded.
Cook each batch until it's perfectly browned.This only take a few minutes if your pan is hot and not crowded.
Now transfer the meat to a bowl for the time being. Set aside.
Add you onions and shallots to the same pan, don't wash it, you want that yummy goodness, there's flavour in that. I add about 1 tablespoon of butter and a dash of salt when browning the onions and shallots. Works wonders. Cook for about 3 to 5 minutes over a medium-high heat.
Now toss in the peppers and if needed you can add some olive oil. Toss and cook over medium-high heat for about 2 to 4 minutes.
Add the garlic and cook for less than 1 minute, it should be fragrant but not burning. It cooks really fast.
Now toss your meat back in the pan.
Season quickly with salt and pepper.
Add the teriyaki sauce and continue to cook for about 3 to 4 minutes, you want everything to come together nicely.
Poured over prepared rice or noodles of your choice.
Serve with a big old I love my new Wüsthof Knives smile!