SichuanEasy 20 min serves 2 Vegetarian-ok

Spicy Sour Potato Shreds (酸辣土豆丝)

Name: Spicy Sour Potato Shreds (酸辣土豆丝)
Total time: 20 min
Yield: 2 servings
Cuisine: Sichuan
Ingredients: potatoes (starchy, e.g. Russet); black vinegar (Chinkiang); dried red chilies, cut into 1 cm pieces; Sichuan peppercorns; garlic, sliced; scallion greens, sliced; salt; neutral oil

酸辣土豆丝 · suān là tǔ dòu sī

家庭快手版 · Home version: The restaurant trick is rinsing and soaking the shredded potatoes so the starch washes away — this is what makes them stay crisp instead of turning to mush. The family version does the same rinse in a bowl; restaurant woks do it with a faster, hotter toss.

Spicy sour potato shreds is the cheapest dish in every Sichuan restaurant and often the most ordered — a plate of thin, crisp potato threads tossed with dried chilies and black vinegar until they're spicy, sour, and impossibly crunchy. The whole dish is a technique test: can you cut thin enough, rinse enough, and wok-hot enough to keep the potatoes crisp? At home, it's the ten-minute dinner.

Recipe author: HǎoWèi Test Kitchen

Home-cooking research team

Reviewed by HǎoWèi editorial team · Last updated 2026-08-29

Quick & Easy Vegetarian

Ingredients

potatoes (starchy, e.g. Russet)土豆（面土豆，如 Russet）🛒 local2 large (about 400 g)
black vinegar (Chinkiang)香醋（镇江）🏮 asian2 tbsp
dried red chilies, cut into 1 cm pieces干辣椒段🏮 asian6
Sichuan peppercorns花椒🏮 asian1 tsp
garlic, sliced蒜片🛒 local3 cloves
scallion greens, sliced葱花🛒 local2 stalks
salt盐🛒 local1/2 tsp
neutral oil食用油🛒 local2 tbsp

potatoes (starchy, e.g. Russet): Starchy potatoes shred cleaner. The peeling is optional — skin adds texture.

🌶️ Adjust to your taste

Pick a level and we'll show exactly how much to change — no more "适量".

Spice level

Saltiness

Oiliness

Make it vegetarian

Instructions

1Peel (optional) and cut the potatoes into thin matchsticks — about 3 mm. Work quickly; the potatoes brown fast.
切细丝
🔍 Look for
Visual: 土豆丝粗细均匀，火柴棍般粗细Shreds are even, matchstick-thin, and similar in size
You know it's right when: 最粗的丝约 3 毫米——没有粗块The thickest shred is about 3 mm — not chunky
2Rinse the shreds in cold water 3 times, then soak in fresh cold water 5 minutes. Drain and pat dry — the water should run clear.
冲洗泡水
🔍 Look for 冲洗 3 遍 + 泡 5 分钟 · 3 rinses + 5 minutes soak
Visual: 水从乳白变清澈；土豆丝变得挺脆Water goes from cloudy white to clear; shreds turn crisp
You know it's right when: 最后一遍水几乎清澈——淀粉洗掉了The last rinse water is almost clear — starch is gone
3Heat oil in a wok over high heat. Add Sichuan peppercorns and fry 15 seconds until fragrant — then remove them (optional, or leave for extra numbing).
炸花椒油
🔍 Look for High heat 15 秒 · 15 seconds
Visual: 花椒滋滋作响，油变香Peppercorns sizzle and the oil turns fragrant
You know it's right when: 尖锐的麻香——在花椒变黑之前Sharp peppery aroma — before they blacken
4Add chilies and garlic. Stir 10 seconds until the chilies are fragrant and glossy (don't burn them).
爆香辣椒
🔍 Look for High heat 10 秒 · 10 seconds
Visual: 辣椒变油亮深红；油色泛红Chilies turn glossy dark red; oil takes on red tint
You know it's right when: 香辣扑鼻——在冒烟之前Spicy aroma hits — before smoke
5Add the potato shreds. Stir-fry over high heat 2 minutes — keep them moving so they cook evenly without sticking.
大火快炒
🔍 Look for High heat 2 分钟 · 2 minutes
Visual: 土豆丝变得微微半透明、油亮Shreds turn slightly translucent and glossy
You know it's right when: 土豆丝能弯不断——脆嫩Shreds bend without breaking — tender-crisp
6Pour the vinegar along the wok wall — it will sizzle. Add salt and scallion greens. Toss 30 seconds and serve immediately while still crisp.
烹醋出锅
🔍 Look for High heat 30 秒 · 30 seconds
Visual: 土豆丝油亮均匀，点缀辣椒碎Shreds are glossy, evenly coated, with chili flecks
You know it's right when: 咬下去还是脆的——立即出锅They still snap when bitten — stop cooking now

Tips

· The rinse is non-negotiable — starch is what turns potatoes to glue.
· Vinegar on the hot wok wall, not on the potatoes: it caramelizes and wakes up.
· High heat, short time. Crisp shreds are a speed contest.
· For extra numbing, crush 1/2 tsp Sichuan peppercorns and add with the salt.

Sources & references

Quantities, technique notes, and substitution ratios are cross-checked against established Chinese cookery references and standard food-science sources.

Read our editorial policy
Fuchsia Dunlop, Land of Plenty: A Treasury of Authentic Sichuan Cooking
USDA FoodData Central — ingredient nutrition and portion data
Traditional Chinese family-kitchen practice and regional taste records

Common questions

It's too spicy. How do I tone it down?

Add a dairy element (a swirl of yogurt, milk, or a spoon of peanut butter) — dairy fat binds the capsaicin. Sugar or honey also helps balance heat. For next time: remove chili seeds (they hold most heat) or halve the dried chilies and add chili oil at the table instead.

Source: HǎoWèi flavor guide

Can I reduce the salt/soy in this recipe?

Yes — soy sauce is the main sodium source. Use light soy at 2/3 amount and finish with salt only to taste. Rinse canned/doubanjiang components if possible. Note: reducing soy also reduces color; a drop of dark soy or a pinch of sugar can restore depth without salt.

Source: HǎoWèi diet guide

I can't find Sichuan peppercorns. What do I use?

Honestly, there is no true substitute — the numbing (má) sensation is unique. Best local approximation: 1/2 tsp black pepper + a little citrus zest for warmth and brightness. If you cook Sichuan food regularly, buy them online; they keep for months in an airtight jar.

Source: HǎoWèi substitution engine

Ingredient swaps

Can't find an Asian-market staple? Use these.

Swap: Sichuan peppercorns
→ black peppercorn + pinch of lemon zest
Ratio: 1:1 · Loses the numbing, keeps some aroma.

Don't make these mistakes

The traps every home cook hits — and how to avoid them.

✗ Crowding the pan — ingredients steam instead of sear.
✓ Fix: Cook in batches; give each piece room to brown.
✗ Adding sauce too early — the wok cools and flavors dull.
✓ Fix: Push food up the wok wall, add sauce to the hot center, toss fast.