Dou Dou (豆豆)
This waterless tomato stir-fried green beans is the bright, refreshing side you want on the table all summer — crisp beans, juicy tomato and golden mushrooms tossed together with no added water. 這道無水料理番茄炒敏豆酸甜清爽、脆嫩下飯，夏天吃特別開胃，是家常餐桌上的百搭素菜。
📹 Watch the Recipe
Recipe by 芭樂媽的家 Qistin Wong TV. Watch the full video here:
🥘 Why This Recipe Works
There is something quietly satisfying about a stir-fry that needs no added water. The secret here is in the pairing: ripe tomatoes and fresh white mushrooms both release plenty of moisture as they cook, so the beans braise gently in their own juices instead of boiling in a pot of plain water. Everything stays concentrated and full-flavoured — nothing gets washed out.
The result is a plate that is equal parts colour and crunch. Red tomato, green beans, snowy white mushroom and a scatter of yellow corn turn an ordinary vegetable dish into something that looks like it belongs on a restaurant menu. The beans stay pleasantly crisp, the tomato collapses into a sweet-tangy coating, and every bite begs for a spoonful of rice.
8 ingredients, one pan, about 10 minutes.
🛒 Ingredients
| Ingredient 食材 | Amount | Notes |
|---|---|---|
| Green beans (敏豆 / 四季豆) | 300 g | Trim ends, pull strings, slice diagonally |
| Tomato 番茄 | 2 | Core and slice |
| White mushrooms 白蘑菇 | 6–8 | Thick slices — they shrink as they cook |
| Canned corn 玉米罐頭 | 2 tsp | For colour and sweetness |
| Perilla (shiso) oil 紫蘇油 | As needed | Or any high-smoke-point oil |
| Salt 鹽 | 1 tsp | Season to taste |
| White pepper 胡椒粉 | 1/2 tsp | |
| Black peppercorns 黑胡椒粒 | To taste | Optional |
👨🍳 Instructions
Step 1 — Prepare the green beans
- Snap off the stem ends and pull off the coarse fibrous strings running along each side.
- Slice the beans diagonally into short, pretty segments.
Step 2 — Prep the tomato and mushrooms
- Remove the tomato core and cut into angled slices.
- Slice the white mushrooms a little thicker, since they release water and become thin once cooked.
Step 3 — Sear the mushrooms
- Heat a wok or pan with a splash of perilla oil over medium-high heat.
- Add the mushroom slices first and sear until golden and fragrant — this is where the rich savoury base comes from.
Step 4 — Add beans and tomato
- Toss in the green beans and tomato slices, then stir-fry quickly over high heat.
Step 5 — Season and finish
- Drop the heat to low, then add the salt, white pepper, black peppercorns and canned corn.
- Crank back to high heat and stir-fry vigorously, shaking the pan, until the tomato softens and blends into a glossy coating.
Step 6 — Serve
- Keep tossing until the natural juices reduce and the beans are tender-crisp — no extra water needed.
- Turn off the heat and serve hot over steamed rice or as a bright side dish.
💡 Tips & Substitutions
| Problem / Question | Fix / Answer |
|---|---|
| Why is this a “waterless” dish? | Tomato and mushrooms release enough moisture as they cook. Skip the added water to keep every bit of flavour concentrated. |
| Are the beans fully cooked? | Yes — continuous high-heat tossing cooks them through while staying crisp. If you prefer them softer, let them cook a minute or two longer. |
| No white mushrooms? | Any mushroom works — shiitake or button mushrooms still provide the moisture and savoury depth. |
| No perilla oil? | Use any neutral oil with a high smoke point, such as canola or peanut oil. |
📊 Nutrition
~140 kcal per serving · Carbs 16 g · Protein 4 g · Fat 7 g · Fiber 5 g (approx., serves 2). Naturally vegan, gluten-free and oil-light.
Ingredients
Method
- Snap off the stem ends, pull off the coarse strings, and slice the green beans diagonally into short segments.
- Core the tomato and cut into angled slices. Slice the white mushrooms thicker, as they release water and thin out once cooked.
- Heat a wok or pan with a splash of perilla oil over medium-high heat. Add the mushroom slices and sear until golden and fragrant.
- Toss in the green beans and tomato slices, then stir-fry quickly over high heat.
- Drop the heat to low and add salt, white pepper, black peppercorns and canned corn. Crank back to high heat and stir-fry vigorously until the tomato softens and blends into a glossy coating.
- Keep tossing until the juices reduce and the beans are tender-crisp with no added water, then serve hot over rice.
Notes
🌱 Why This Dish
番茄炒敏豆 (fānqié chǎo mǐndòu) belongs to the proud tradition of Taiwanese jiācháng cài (家常菜) — the everyday home cooking that favours fresh seasonal vegetables and quick, fuss-free technique over elaborate ceremony. 敏豆, another name for 四季豆 (sìjì dòu, “four-season bean”), is a beloved summer vegetable because it stays crisp and snap-fresh even after a fast sear in the wok.
The genius of this version lies in wúshuǐ liàolǐ (無水料理), the waterless cooking philosophy that lets vegetables braise in their own released juices. By drawing on the natural moisture of tomato and mushroom, the dish preserves nutrients and delivers an intense, undiluted flavour that a pot of boiling water could never match.
For many Chinese households, a stir-fried vegetable in the colours of a summer garden is the anchor of every meal — eaten alongside rice as a simple, nourishing, wholly comforting dish, and just as at home packed into a bento box for lunch.
