Cut up a yellow onion and slice in half beef strips.
For the marinade, in a mixing bowl, add Bachan's Hella Hot Japanese sauce, rice vinegar, corn starch and sugar. Mix ingredients together.
Drop the beef into the marinade and place in the fridge for at least 30 minutes.
Preheat the grill to a high heat and set for indirect heat.
Place the chopped onions on the heated flat top. Season with Dad's Sweet BBQ rub for additional flavor. Toss them around to evenly grill them up.
Drop the marinated beef strips next to the sautéing onions and spread them apart making sure each strip is getting a nice char. Continuously flip them hibachi style. Start mixing the beef and veggies together.