Place all of the sauce ingredients in a large mixing bowl, whisk until well combine. Set aside.Place the 4 cups of vegetable oil in a pot big enough to hold it and the wings while they are frying. Heat the oil to medium to high heat about 375 degrees if your using a thermometer.Fry the wings in 3 batches, each batch cooking for 8 -10 minutes until cooked through and crispy. After the wings are cooked, drain them on paper towels to remove the excess grease from frying. Whisk the sauce one more time just to make sure all the ingredients are well combined. Toss the wings in the bowl with the sauce in batches until coated. Place the wings on a serving plate and garnish with chopped green onion.