Heat the sesame oil in a large skillet over medium-high heat. Add the garlic and onion. Saute until onion is softened and garlic is fragrant, about 2 minutes.
Add the pork, ginger, salt, pepper, and Sriracha. Saute until pork is cooked through, about 7 minutes.
Add the coleslaw mix, soy sauce, and rice vinegar. Saute until coleslaw is cooked down and tender, about 4 minutes.
Serve topped with sliced green onions and sesame seeds.
Notes
If desired, substitute ground chicken, turkey, pork, or beef for the ground pork sausage. And feel free to add extra veggies!