Heat sesame oil in a large skillet over medium heat.
Add the onion and cook until softened, about 3 minutes.
Stir in garlic and ginger and cook for 30 seconds.
Add ground pork or turkey and cook until browned, breaking it apart as it cooks.
Add the coleslaw mix, soy sauce, rice vinegar, and sriracha.
Stir well and cook until the cabbage is tender but still crisp, about 5 minutes.
Remove from heat and top with sliced green onions and sesame seeds before serving.