You can run, you can hide, and you will still be obsessed with Teriyaki everything after learning to make your own sauce. The trick is to tweak the sauce until you nail the exact flavor you crave.
You will need:
For the sauce:
1/3c water
2 tbsp Soy Sauce
1/4 tsp Ginger Powder
1/2 tsp Garlic Powder
1/2 tsp Hot Sauce
1 tsp Molasses
1 tbsp Tapioca or Corn Starch
And yr vegetables of choice, such as:
1 green bell pepper
1 box of sliced mushrooms
2 stalks green onions, sliced
1 handful of spinach
1 zucchini, chopped in half, then into 1/4 inch half moons
And yr protein of choice, such as:
1 cup chick peas, adzuki beans, black beans, etc
And yr flair of choice, such as:
Pineapple slices, mango slices, papaya slices, chopped apricot, etc
Let's do this:
Mix all the sauce ingredients in a small bowl and wisk them together with a fork. Give it a little taste (the pro way is to drop a dot on the back of your hand and lick it so you never spread your cooties). Then, start tweaking to get it just right. The soy sauce (sometimes needs a touch more salty flavor), ginger (only needs a very small amount - too much makes it bitter - so use sparingly), and garlic (some like it more garlic-y than others) make the biggest differences. You know you have that perfect Teriyaki taste in your mind - manifest it!
Dump enough water to just cover the bottom of a wok or pot and put the heat up to high. Get it up to close to a boil but not so boiling that it is evaporating and add the green onions, and reduce the heat to medium high. Cook them for about 1 minute, then add the box of mushrooms. Cook until the mushrooms have shrunk in size and are a bit browned, about another 1 minute. Then, add the bell peppers and zucchini. Stir and let cook for about 1 minute more. Add the spinach and stir until it cooks down and wilts in with everything else.
Then, add the rest of the sauce and turn the heat up to medium high and simmer for about 5 minutes. You want to reduce the sauce down so it thickens and sticks onto everything. Once it is reduced to your liking, add the beans, stir, put on plates, add the flair, and enjoy.
Note: If you are soy-free, use 1 tbsp tomato paste instead of the soy sauce and add 1 tsp apple cider vinegar to make this more of an American BBQ sauce. Give it a taste and perhaps add some extra sugar to balance it out. Same rules about the need to tweak apply!