Saute garlic, ginger, and red pepper flakes, with the beef until the beef is 85% cooked through. .
Add broth, fish sauce, spices and sugar.
Bring to a boil, then simmer for 10 minutes.
Rinse rice noodles and chop into 4-5 inch pieces.
Place noodles in bowls, pour broth and meat over noodles.
Add any or all garnish desired.
Personal Note: I like mine with super spicy so I add tons of jalapeno and siracha sauce, along with all the veggies and herbs. You can also do this with pork, fish, shrimp, or chicken, or use veggie stock and tofu if you want to keep it vegetarian.