Slice garlic into thin slices and set aside
Chop green onions and set aside
Cut beef tenderloin into 1” cubes, season with salt, black pepper and garlic powder. Set aside
Clean and cut mushrooms to your desired size and dry in colander
Turn heat to medium, heat wok, add 2 tbsp oil and add garlic slices.
Fry until lightly golden and remove from wok
Be sure to have approx. 1 tbsp of oil still in the wok. Turn heat to high
Once your wok is hot, add the beef. Arrange in a single layer and do not move it around for 40 seconds
Flip the beef over and let it fry for another 40 seconds, stir-fry for another 20 seconds to somewhat sear the other sides. Remove from wok
Add mushrooms to the wok, add 1 tbsp Shaoxing wine, 1 tbsp sweet soy sauce, 1 tbsp oyster sauce and stir-fry for 1 minute
Add the beef into the wok and stir-fry for 1 minute or until the beef reaches your desired doneness
Turn off heat, add sliced garlic and green onions. Mix well
Serve