Cook the noodles until al-dente based on instruction. Rinse with cold water to stop the cooking process and set aside.
In the meantime marinate the beef with black pepper, oyster sauce, soy sauce, baking soda, corn starch, and oil. Massage well and set aside.
The sauce is super easy, mix soy sauce, minced garlic, black pepper, ketchup and Worcestershire sauce
In a pan, drizzle in oil and turn the heat up to medium-high. Once the pan is hot, add the beef and let it sit for 30 seconds before sauteing for 3-4 minutes. Remove and set aside.
In the same pan, add in sliced red onion and sauce for 1-2 minutes. Next add in the pepepres and saute for 1-2 minutes.
Finally, add in the noodles, add back in the beef, and pour on the sauce. Saute on high heat for another 2-3 minutes.
