Chinese Mongolia Beef
Why does Mongolian beef always seem to vanish before anything else on the table?
Probably because once that glossy sauce gets around the browned beef and spring onions, plain rice suddenly becomes very useful.
What I want from Mongolian beef is that slightly sticky finish around the edges.
Not swimming in sauce. Not sugary. Just enough to coat the beef and catch in the pan a little.
The beef should stay tender, the spring onions should still have some bite, and the sauce needs that salty-sweet balance that makes you keep reaching back in with your fork.
A bowl of rice underneath takes care of the rest.
By the time the sauce starts working its way into the rice, the whole thing gets even better.
It’s simple, fast, and properly satisfying without needing a pile of extras.
Why You Need to Try It
- The beef gets crisp around the edges without turning tough
- The sauce is thick, dark and properly glossy
- Plenty of garlic and spring onion
- Easy enough for a weeknight
- Tastes far better than a soggy takeaway version
- Perfect with plain steamed rice
Ingredients
For the Beef
- 500g flank steak or sirloin steak
- 3 tablespoons cornflour
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 3 tablespoons neutral oil, for frying
For the Sauce
- 4 garlic cloves, finely chopped
- 1 tablespoon fresh ginger, grated
- 1/3 cup light soy sauce
- 2 tablespoons dark soy sauce
- 1/3 cup brown sugar
- 1/3 cup water
- 1 tablespoon rice vinegar
- 1 teaspoon sesame oil
- 1/2 teaspoon chilli flakes
- 1 teaspoon cornflour mixed with 1 tablespoon water
To Finish
- 4 spring onions, sliced diagonally
- 1 fresh red chilli, thinly sliced
- Extra chilli flakes, if you like
- Plain boiled white rice, to serve
Instructions
- Slice the beef thinly against the grain.
- Pat it dry really well with kitchen paper. This matters more than it sounds because wet beef will steam instead of crisp.
- Toss the beef with the cornflour, salt and black pepper until every piece has a light coating.
- Mix the light soy sauce, dark soy sauce, brown sugar, water, rice vinegar, sesame oil and chilli flakes in a small bowl.
- Heat a large frying pan or wok over high heat and add 1 tablespoon of oil.
- Fry the beef in batches, keeping the pieces in a single layer. Let them sit for a minute before turning so they get those dark caramelised edges.
- Cook each batch for about 2–3 minutes, then transfer to a plate.
- Add a little more oil if the pan looks dry.
- Lower the heat slightly and add the garlic and ginger. Stir for about 30 seconds.
- Pour in the sauce mixture and let it bubble for 2–3 minutes.
- Stir in the cornflour slurry and cook until the sauce turns thick and glossy.
- Add the beef back to the pan and toss well so every piece is coated.
- Add most of the spring onions and cook for another minute.
- Spoon the beef beside a generous serving of plain white rice.
- Finish with the remaining spring onions, sliced red chilli and a few extra chilli flakes.
How to Get That Crispy Beef
The main thing is not crowding the pan.
If you throw all the beef in at once, it releases moisture and ends up soft.
Do two or three batches instead.
Also, don’t keep stirring it around.
Give the beef a chance to actually brown before you move it.
The Sauce Should Be Thick
You’re not aiming for a thin stir-fry sauce here.
It should reduce until it looks shiny and sticky and clings to the beef.
If it still looks watery, let it bubble for another minute before adding the beef back in.
If it gets too thick, loosen it with a splash of water.
What to Serve With Mongolian Beef
Plain white rice is the obvious choice and, frankly, the best one.
You can also serve it with:
- Egg fried rice
- Steamed broccoli
- Stir-fried green beans
- Pak choi
- Cucumber salad
Storage
Keep leftovers in an airtight container in the fridge for up to 3 days.
Reheat in a frying pan with a tiny splash of water.
The microwave works too, but the beef won’t stay quite as crisp.
Q&A
What cut of beef works best?
Flank steak is great because it cooks quickly and stays tender when sliced thinly.
Sirloin works well too.
Can I make it less sweet?
Yes.
Reduce the brown sugar to 2 tablespoons.
Can I make it spicier?
Absolutely.
Add more chilli flakes or another sliced fresh chilli.
Do I have to use cornflour?
For the texture you want here, yes.
It helps the beef crisp up and also gives the sauce that glossy finish.
Can I make the sauce ahead?
Yes.
Mix it up earlier in the day and keep it covered in the fridge until you’re ready to cook.
