To make the sauce combine sauce ingredients and set aside.
In a large skillet over medium high heat add the pork in a single layer and cook, turning once, until slightly crisp, about six minutes. Cut the pork into 1 inch pieces with scissors and drain some of the fat from the skillet with a paper towel.
Add the onion and cook for a minute and add the kimchee and give it a stir, 3 minutes. Add the sauce and toss until everything is cooked, about 5-6 minutes stir in the green onions. Transfer to a plate and garnish with toasted sesame seeds.