Cooking Steps

• Bring a large pot of lightly salted water to a boil. Cook spaghetti in the boiling water, stirring occasionally, until tender yet firm to the bite, about 12 minutes. Drain and run under cold water to stop cooking. Set aside.
• Meanwhile, crumble ground beef in a large skillet over medium-high heat. Cook for 4 minutes. Add garlic and cook 1 minute more. Drain any excess grease.
• Return beef to skillet. Add ginger, brown sugar, soy sauce, hoisin, broth, vinegar, and pepper flakes.
• Add cornstarch and cold water to a small jar with a lid. Cover and shake until combined and mixture is a thick slurry. Pour over beef mixture.
• Cook over medium-high heat until thickened, about 3 minutes. Stir in reserved spaghetti and cook 2 minutes more. Turn heat off and let sit for 1 minute.
• Sprinkle each serving with green onion and sesame seeds.