Step 1

Make the stir fry sauce first. Combine the soy sauce, water, brown sugar, sesame oil, garlic, ginger, and cornstarch in a small bowl. Set the sauce aside.

Step 2

Chop the vegetables into similar-sized pieces. It's up to you whether you slice, dice, or cut into any other shape you prefer.

Step 3

Add the cooking oil to a very large skillet or wok. Heat over medium-high. When the pan and oil are very hot (but not smoking), add the hardest vegetables first: carrots and broccoli. Cook and stir for about a minute, or just until the broccoli begins to turn bright green.

Step 4

Next, add the mushrooms and sugar snap peas. Continue to cook and stir for a minute or two more, or just until the mushrooms begin to soften.

Step 5

Finally, add the softest vegetables, bell pepper and onion. Continue to cook and stir just until the onion begins to soften.

Step 6

Give the stir fry sauce another brief stir, then pour it over the vegetables. Continue to cook and stir until the sauce begins to simmer, at which point it will thicken and turn glossy. Remove the vegetables from the heat, or continue to cook until they are to your desired doneness.

Step 7

Top the stir fry with sesame seeds and serve!