'Mongolian' stir-fry beef recipe

Name: 'Mongolian' stir-fry beef
Yield: Serves 2
Ingredients: 2 tbsp cornflour; 1 tsp bicarbonate of soda; 1 tsp sesame oil; 357g pack beef stir-fry strips; 2 tbsp vegetable oil; 4 spring onions, cut into 2cm batons; 2 garlic cloves, thinly sliced; 3cm piece fresh ginger, peeled and sliced into matchsticks; ½ each red pepper and green pepper, deseeded and diced to 2cm squares; 2 red chillies, sliced and deseeded if you like; 5g fresh coriander, leaves picked; 250g microwave long-grain rice (optional); 1½ tbsp oyster sauce; 1 tbsp dark soy sauce; 1 tbsp light brown soft sugar; ½ tsp rice vinegar or white wine vinegar; 1 tsp cornflour mixed with 2 tsp water

Created by The Tesco Recipes team

Dark soy sauce is fermented for longer than light soy sauce, resulting in a more complex condiment with caramel undertones. We used it in this lip-smacking stir-fry, featuring beef strips cooked in a rich garlic, chilli and dark soy sauce.

See method

Serves 2
Takes 25 mins plus at least 30 mins marinating
466 calories / serving

Dairy-free

Shop your ingredients

Tesco Cornflour 500G
2 tbsp cornflour
£2.55
£5.10/kg
Stockwell & Co. Bicarbonate Of Soda 200G
Aldi Price Match
1 tsp bicarbonate of soda
£0.65
£3.25/kg
Tesco Toasted Sesame Oil 250Ml
1 tsp sesame oil
£2.65
£10.60/litre
Tesco Beef Stir Fry Strips 357G
357g pack beef stir-fry strips
£6.40
£17.93/kg
Tesco Pure Vegetable Oil 1L
Aldi Price Match
2 tbsp vegetable oil
£1.45
£1.45/litre
Tesco Bunched Spring Onions 100G
49p Clubcard Price
(£4.90/kg)
Offer valid for delivery from 08/09/2026 until 05/10/2026
4 spring onions, cut into 2cm batons
£0.69
£6.90/kg
Tesco Large Garlic
2 garlic cloves, thinly sliced
£0.50
£0.50/each
Tesco Ginger 100g
3cm piece fresh ginger, peeled and sliced into matchsticks
£1.25
£12.50/kg
Tesco Red Peppers Each
Aldi Price Match
½ each red pepper and green pepper, deseeded and diced to 2cm squares
£0.70
£0.70/each
Tesco Red Chillies 60G
2 red chillies, sliced and deseeded if you like
£0.51
£8.50/kg
Tesco Fresh Cut Coriander 30G
Aldi Price Match
5g fresh coriander, leaves picked
£0.50
£16.67/kg
Grower Harvest Long Grain Rice 1Kg
Aldi Price Match
250g microwave long-grain rice (optional)
£0.52
£0.52/kg
Tesco Oyster Sauce 150Ml
1½ tbsp oyster sauce
£1.65
£11.00/litre
Tesco Dark Soy Sauce 150Ml
Aldi Price Match
1 tbsp dark soy sauce
£0.55
£3.67/litre
Tesco Light Brown Soft Sugar 500g
1 tbsp light brown soft sugar
£2.00
£4.00/kg
Tesco Rice Wine Vinegar 150Ml
½ tsp rice vinegar or white wine vinegar
£2.25
£15.00/litre

Method

In a bowl, mix the 2 tbsp cornflour with 3 tbsp water into a paste, then stir in the bicarbonate of soda and the sesame oil. Add the beef and stir to coat. Set aside in the fridge to marinate for at least 30 mins or overnight in the fridge, if you have time.
Mix the sauce ingredients together in a bowl.
Heat the vegetable oil in a wok or frying pan until smoking hot, then add the beef. Stir-fry for 1-2 mins until just seared, then pour out and discard any excess oil and liquid. Add the spring onions, garlic, ginger, peppers and chillies and fry for 2 mins.
Re-stir the sauce to ensure the cornflour is incorporated, then pour it into the wok and simmer for 2-3 mins until reduced and saucy. Serve with the coriander leaves sprinkled over the top and rice on the side, if you like.