Stir fry the mince beef with garlic
While cooking steam spinach or lightly stir fry with garlic or little bit of ginger
While cooking meat prepare sauce - oyster sauce, soy, white pepper, sesame oil, pinch of sugar and corn starch mixed with water
Once meat cooked through, add in raw sauce preparation and stir until thickened and glossy
Serve rice, add spinach on top of rice then add meat and mushroom mixture on top.