Stir-Fried Tender Green Beans with Beef Tenderloin

Why people make this dish

Green beans on their own make a lovely simple stir-fry, but pairing them with pre-marinated beef tenderloin turns the dish into a more satisfying meal. The result is a fresh, colourful combination that comes together in under half an hour.

Beyond the taste, there’s a good reason to include green beans in your summer meals. Traditionally, green beans are considered to have a mildly warm, sweet nature, associated with nourishing the spleen and stomach, clearing summer-heat and easing the dampness that the humid season brings. They work equally well stir-fried alone or with meat.

Who it suits / who should be cautious

• Generally suitable for most people; a wholesome, everyday dish for the whole family
• Important food-safety caution: Green beans contain natural compounds (saponins and haemagglutinins) that can cause nausea, vomiting and numbness of the lips if the beans are undercooked. Always cook them until fully tender and bright green — err on the side of longer, not shorter, cooking. This is not a quick blanch-and-toss situation.
• If poisoning symptoms occur (nausea, vomiting, lip numbness), Bro Niu suggests boiling 75 g of mung beans with 4–6 slices of dried liquorice root in water as a supportive measure — and see a doctor if symptoms are severe.

Why these ingredients (the food-therapy logic)

• Green beans (yu dou / si ji dou): Mild and mildly warming in nature. Traditionally associated with tonifying qi, supporting the spleen and stomach, clearing summer dampness and relieving mild water retention.
• Beef tenderloin: Beef is considered nourishing to the spleen and stomach in Chinese dietary tradition, helping to replenish qi and blood. The tenderloin cut is lean and tender, making it easy to digest.
• Garlic: Warming and aromatic; classically used to dispel cold and support digestion.

Ingredients (2–3 servings)

Ingredient	Amount	Notes
Tender green beans	~150 g (4 liang)	Rinse; use French beans if yu dou unavailable
Beef tenderloin	~150 g (4 liang)	Slice thinly against the grain
Egg white	From 1 egg	For marinating
Light soy sauce	A splash	For marinating
Garlic, minced	1 teaspoon
Oyster sauce	A small amount	To finish
Cornstarch + water	A small amount	For thickening
Sugar, salt	To taste
Cooking oil	As needed

Method

1. Slice the beef thinly against the grain. Combine with egg white, a splash of light soy sauce and any other preferred seasoning. Mix well and set aside to marinate for at least 10 minutes.
2. Bring a pot of water to a full boil. Blanch the green beans until they turn a vivid, deep green and are cooked through — do not rush this step. Drain and set aside.
3. Heat oil in a wok over high heat. Add the marinated beef and stir-fry until about 80% cooked. Remove and set aside.
4. In the same wok, add a little more oil and fry the minced garlic until fragrant.
5. Add the blanched green beans, a pinch of sugar and salt, and toss over high heat.
6. Return the beef to the wok. Add a small amount of oyster sauce and the cornstarch-water mixture. Stir-fry quickly for another 30 seconds until everything is glossy and well combined.
7. Plate and serve immediately with steamed rice.

Bro Niu’s tips

The single most important thing to remember with green beans is: cook them thoroughly. They must be cooked until completely soft — the natural toxins in raw or undercooked beans only disappear with sufficient heat. Blanching them in boiling water before the stir-fry is the most reliable way to ensure they are safely cooked through.

If someone in your household accidentally eats undercooked beans and develops symptoms such as nausea, vomiting or numbness around the lips, use mung beans (~75 g) simmered with a few slices of liquorice root as a traditional supportive measure. Seek medical attention if symptoms are severe or persistent.

Community questions answered (selected)

• Q (Chloe): Can I drink coix seed (yi mi) water while I have a cold and cough? Bro Niu: Coix seed water can be drunk during a cold. Adding two slices of fresh lemon helps strengthen the body’s resistance against illness.

• Q (MEL): What is the difference between fu ling (poria) and fu shen (poria with wood)? Bro Niu: They actually come from the same fungus — fu shen is the inner portion of fu ling that surrounds the root, and it has a particularly good calming and sleep-supporting action. Just use one or the other, about 5 qian is enough.

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Published June 18, 2014 · Adapted and translated for Nourilo from a traditional home-kitchen recipe. Approx. 4 min read.