Slice the flank steak against the grain into thin strips and season with sea salt and black pepper.
In a small bowl, whisk together the tamari, toasted sesame oil, raw honey, minced garlic, and grated ginger.
Heat avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the beef strips in a single layer and sear until browned, about 2-3 minutes, then remove and set aside.
Add the broccoli florets and a splash of water to the skillet, covering with a lid for 2 minutes to steam-tenderize.
Return the beef to the pan, pour in the sauce, and toss everything together for 1 minute until the glaze thickens and coats the ingredients.
Garnish with sesame seeds before serving.