Marinate the sliced chicken in soy sauce, ginger, and black pepper for at least 30 minutes.
This brings out the flavors perfectly.
Heat sesame oil in a large skillet over medium-high heat.
Add marinated chicken slices and cook until they're browned.
In the same skillet, add chicken broth and let it come to a boil.
Reduce the heat and let it simmer.
Add broccoli florets to the skillet, cooking them until they are vibrant and tender.
They should soak up the flavors from the broth.
Mix cornstarch with a small amount of water to create a slurry, then add it to the skillet.
Stir until the sauce thickens and coats the chicken and broccoli evenly.