1. Toss sliced beef in a large bowl with corn starch.
2. Heat canola oil in a pan over medium heat for a few minutes. Add sliced beef and cook until it browns, a few minutes, stirring frequently. Transfer to a plate and set aside.
3. Add broccoli and garlic to the pan, and stir. Add beef broth. Let simmer until the broccoli is tender, about 10 minutes, stirring occasionally.
4. While waiting for the broccoli to cook, combine all of the sauce ingredients in a bowl and mix well.
5. Add the reserved beef and sauce to the pan, and stir. Let simmer for 5 minutes so the sauce thickens a bit and serve!

Recipe sources [1]