Finely mince the garlic. For hibachi-style onions, peel the onion and trim the root ends. Turn the onion on its side and make three cuts to slice it into 4 equal rings, then cut each ring into 4 segments.
For the carrot, slice it on a diagonal into ¼ inch thick. For smaller broccoli florets, halve them. Larger florets, quarter them. Halve the mushrooms.
For hibachi style zucchini, trim the bottom ends. Slice the zucchini into half at width, then take each segment and slice it lengthwise into 4 equal-sized slices. Finally, cut each slice lengthwise into matchsticks.
To cook:
Preheat a large 12-inch saute pan over medium heat until it feels warm. Add 1 tbsp oil and garlic. Saute for 5 seconds.
Add carrots, broccoli, and a pinch of salt. Saute for 15 seconds. Cover the pan with a lid to allow the vegetables to cook for 1 minute.
Add the mushrooms, zucchini, 1 tbsp oil, and a pinch of salt. Turn heat up to medium-high and saute for 1 minute. Add the onions and mushroom seasonings (or a pinch of salt), and saute for 30 seconds.
Push the veggies to the side of the pan and add the butter and pour in the sauce. Saute for another minute. The sauce should turn a bit glossier and creamer because of the butter. Turn off the heat.
To serve:
Transfer the vegetables to a large serving plate and garnish with sesame seeds. Add a small slice of butter on top of the veggies to allow it to melt, if desired. Serve hot.
Notes
Pay attention to how to cut each vegetable differently for Hibachi use. (Cut each veggie into a uniform shape/size to maximize crisp texture.
Stir fry in LAYERS. Add the vegetables into the pan in layers because they have different cook times. Don't add all of them in at once.
Use a large (12-inch) saute pan at home to mimic the griddle (blackstone) in restaurants. (i.e. easier to allow the moisture to vapor on a larger flat cooking surface.
Add a touch of Takii shiitake mushroom seasoning for an extra flavor boost (used to replace msg in the shaker bottle)
In hibachi restaurants, the “salt” shaker the chefs use is a combination of salt, white pepper, and msg.