In a small pot, whisk together the soy sauce, rice vinegar, vegetable broth, brown sugar, honey, black vinegar, Shaoxing wine, sesame oil, ginger, and garlic.
In a small bowl, whisk together the cornstarch with 1 tablespoon water to thin it. Add this to the teriyaki sauce.
Bring the sauce to a rapid simmer over medium-high heat on the stove. Reduce to a low simmer. Simmer until thickened, stirring occasionally, about 5 minutes. The longer the sauce simmers, the thicker it becomes.
Meanwhile, cook the noodles in well-salted water per package instructions. Drain and return to the pot.
Pour the sauce onto the noodles. Adjust the heat to medium so that the sauce starts to simmer a little bit. Use tongs to toss the noodles in the sauce. Enjoy!
Video
Notes
Noodles: Any variety of noodles works here. Rice noodles, ramen noodles, soba, etc.
Noodle weight: I like to serve teriyaki noodles with udon noodles. The noodles I use are 24 ounces of frozen cooked noodles which I thaw in boiling water for a minute. If using dry noodles (per recipe instructions) you will need 12 ounces, which equals about 24 ounces of cooked noodles.
Black vinegar and Shaoxing wine: *These two ingredients can be omitted if desired* These are not traditional to teriyaki sauce. I like to add them to increase the depth of the sauce, as typically teriyaki sauce is served with umami-rich meat, and in this case, we are serving it in a vegetarian method.
Find these at H Mart or an East Asian grocery store.
The teriyaki sauce can be made up to a week in advance. Keep refrigerated until ready to use. The sauce is also fantastic on tofu. I recommend ½ cup of teriyaki sauce per 1 pound of tofu.
To thicken the sauce further, add 1 teaspoon corn starch dissolved in 1 teaspoon water, or continue simmering to evaporate liquid.
For a lower sodium option, start with ¼ cup reduced-sodium soy sauce and adjust to taste.