Mix all the sauce ingredients in a jar o bowl.
Place meat in a big bowl and add ¼ cup of sauce. Mix to combine. Let it marinade for 15 to 30 minutes, or longer if you have the time. The more marinating, the more tender and flavorful the meat will be.
Turn the Instant Pot on and select "saute" mode, adjust heat to less. When hot, add 1 tablespoon of oil. Add broccoli florets and saute for 3 - 5 minutes, stirring constantly, until they are vibrant in color and just tender. Remove from Instant Pot and reserve. Turn off the Instant Pot. Note: You can also steam or pan fry the broccoli on the stove, if desired.
Turn the Instant Pot on again and select "saute" mode, adjust heat to more. Add 2 tablespoons of oil. When hot, add garlic and ginger and sauté for 2 minutes, stirring constantly, or until fragrant. Add the meat (in batches) and brown. Note: You can skip the browning process, but it really adds more flavors to the dish. You can also brown the meat over the stove, if desired.
When the meat is brown, add the remaining sauce; mix to combine. Secure the lid to the instant pot and select "meat", adjust the time to 15 minutes.
When the time is over, let the pressure release on its own for 5 minutes. Then, carefully turn the vent to "Venting," to release any extra pressure that might still be in there. Then remove the lid.
Add broccoli to pot and toss to coat. Season with salt, if needed.
Garnish green onion slices and sesame seeds, if desired. Serve immediately over rice or steamed vegetables.