Warm-up saucepan to a medium heat then mix sugar, sweet soy sauce, oyster sauce, Japanese soy sauce, rice vinegar well together.
Keep stirring sauce mixture then slowly add sesame oil, freshwater, and ginger.
Reduce to low heat and let the sauce thicken up.
Add roast sesame, stir slowly to allow sesame mix well with the sauce.
Turn off the heat and pour the sauce into an appropriate container to rest.
Add SteadiProTM into the pan and heat up to medium heat.
Slowly pour the teriyaki sauce into the pan and let the sauce mix well with SteadiPro.
Pour spring onion into the pan and mix in.