Cook spaghetti in well-salted water according to package instructions. Drain well and set aside.

Meanwhile, in a six-quart pot over medium heat, place oil, brown sugar, sauces, garlic, and salt. Stir well until all the ingredients are fully combined and brown sugar dissolves.

Lower heat and add cooked pasta. Mix well until all the pasta is covered in sauce. Add sesame seeds and cook for another three minutes. Remove from heat, sprinkle sliced scallions over noodles, and serve.