Slice: Hold your knife at a 45-degree angle will make the slice wilder and more flat. Slice the beef against the grain into thin pieces at about ⅛-inch (0.3 cm) thin.
Tenderize and marinate: In a bowl, add the beef and season with ingredients from soy sauce to sesame oil. Add in the water little-by-little while messaging the beef until the water is absorbed. Cover the bowl and marinate the meat for 15 minutes in the fridge or up to 1 day in advance. Your beef is ready for stir frying!
Aromatics & Sauce: Prepare garlic, scallions, and ginger. Rinse the bean sprouts, drain, and pat dry. Stir the sauce in a cup from stock to starch.
Sear beef: Preheat a large saute pan over medium heat until it feels quite hot, add 1 tbsp oil. Add the beef and quickly spread it out into a single layer. You should hear a sizzling sound. If not, turn the heat up higher. Pay sear for 2 minutes without disturbing or until you see the bottom turns crisp brown. Flip and sear the other side for 1 minute. Transfer out along with the pan juice to set aside.
Saute aromatics: While the pan is still hot, add the remaining 0.5 tbsp oil. Saute garlic and ginger with a small pinch of salt over medium heat for 15 seconds.
Bean sprouts, beef, and sauce: Turn heat up to medium-high. Add the bean sprouts, toss for 10 seconds. Return the beef and stir the sauce again before pouring it in. Toss for 30 seconds. Turn off the heat.
Serve: Transfer to a large serving plate. Serve hot with rice.
Video
Notes
Cookware size: Use a large sauté pan or wok. A 12-inch (31cm) pan is ideal.
Use a splatter guard: Not a lid. A lid traps moisture and can make your stir fry soggy.
Stir fry beef selections: Choose lean cuts and thin pieces of steak like flank, skirt, or sirloin tip. These are easier to slice thinly than thicker cuts like ribeye.
Knife selection: I recommend a sharp boning knife for its thin, narrow tip, which is easy to control.
Knife slicing technique: Slice the beef against the grain into thin pieces, not strips. Hold your knife at a 45-degree angle, moving from left to right instead of straight up and down.
Temperature & Timing: Preheat your pan properly—it should be hot but not smoking. You should hear a sizzle throughout the cooking process.
Make-ahead: You can slice and marinate the beef (velvet beef) up to one or two days in advance to save time.
Storage: Store in an airtight container in the fridge for up to 4 days.