Xi'an Biang Biang Noodles

Biang biang noodles are the belt-wide, hand-pulled noodles of Xi’an — thick, springy, ragged-edged ribbons made for soaking up chilli and spice. They’re finished by pouring smoking-hot oil over a mound of aromatics, a trick known as you po. The dough is nothing but flour, water and salt, so everything comes down to gluten and patience.

Sources

Biang-Biang Noodles; Jason Wang, Xi’an Famous Foods (dough)

Xi’an Biang Biang Noodles; Wei Guo, Red House Spice (oil)

Note on Equipment:

All you need to flatten the dough is a rolling pin. (I run mine through an Ono Type 1 Pasta Machine, the heavy roller I already own for low-hydration ramen, but it’s not required — this stiff dough just takes a little muscle by hand.)

The Dough

Makes 2-3 servings (about 6 pieces)

• 405 grams Manitoba flour (or another strong, high-gluten flour)
• 180 grams water, room temperature
• 3 grams (½ teaspoon) salt

This dough is meant to be dry and firm — it takes some effort to bring together, and that’s the point. I use Manitoba, the same strong, high-gluten flour I reach for with ramen: it gives these noodles their proper chew and the backbone to pull to belt-width without tearing. Strong flour is thirsty, though, so don’t be surprised if you need to work in a little more water, a few drops at a time, to bring it together — but keep it on the tight side.

1. Stir the salt into the water until it dissolves.
2. Tip the flour into a mixer bowl and fit the dough hook. Running on low, trickle in the salted water and let it keep going until the sides come clean and you have a smooth ball. (By hand: work the water in gradually and knead for 8-10 minutes.)
3. Turn the dough out onto a floured surface and knead hard — it’s stubborn at the start, then eases into something smooth and elastic the longer you go.
4. Cover and let it sit for 5 minutes, then work it again for about a minute. Run through that rest-and-work cycle two more times: three kneads, roughly 15 minutes of resting all told. This is where the gluten that lets you pull the noodles gets built.

Shape and Rest

• The dough from above
• Cling film

1. Cut the dough into roughly 6 equal pieces, about 100 grams each. Shape each into a stubby log.
2. Stack the pieces with a sheet of cling film between each one so they don’t fuse together, then wrap the whole stack tightly and rest at room temperature. One hour is the minimum, but 2 to 4 hours is the sweet spot — this dough is stiff and low-hydration, so it needs the extra time for the gluten to relax fully and pull without snapping back. With a strong flour like Manitoba, lean toward the longer end; the extra gluten means more spring, so give it the full stretch of time (or an overnight rest in the fridge). The film seals in moisture so no dry skin forms and the pieces stay supple for rolling and pulling.

There’s no yeast here, so the rest is only about the gluten letting go — you can’t over-prove it. For anything past four hours, or to make it ahead, refrigerate the wrapped stack: it keeps a day or two. Let the dough come all the way back to room temperature before you pull, or the cold dough will fight the stretch.

Roll and Pull

• The rested dough pieces
• Potato or corn starch, for dusting

New to pulling? Read the tips at the end once first — the steps here stay short on purpose.

1. Have a big pot of water boiling before you start — pulled noodles go straight in.
2. One piece at a time, roll it into an even rectangle a few millimetres thick. Dust with starch if it sticks.
3. Let each rolled piece rest a moment while you flatten the next.
4. Press a deep groove down the centre lengthways with a chopstick, stopping short of cutting through.
5. Work the piece between your hands until soft and elastic, then draw it out — gently at first, then bouncing it against the counter — to about 1.2–1.5 m long, 3–4 cm wide and 2–3 mm thick.
6. Rip along the groove into one long loop, leaving the far ends joined. Pinch out any thick spots.

Cook

• The pulled noodles
• 1 head bok choy, or other leafy greens (optional)

1. Drop each noodle into hard-boiling water the moment it’s pulled and stir so it doesn’t stick. Cook a portion at a time.
2. Boil about 2 minutes, until chewy but not soft — taste one to check.
3. If using greens, add them for the final 20 seconds.
4. Drain well and divide between bowls.

The Dressing (You Po)

Per serving:

• 1 tablespoon scallions, finely chopped
• 2 teaspoons garlic, minced
• Chilli flakes, to taste
• Chilli powder, to taste
• ¼ teaspoon ground Sichuan pepper
• Salt, to taste
• 4 tablespoons cooking oil
• 1 tablespoon light soy sauce
• 1 tablespoon black rice vinegar (Chinkiang)

The aromatics go on raw and the smoking oil cooks them where they sit, releasing everything in one fragrant rush. Because these noodles run big, I’ve bumped the oil up so there’s enough to coat them.

1. Heap the scallions, garlic, chilli flakes, chilli powder, Sichuan pepper and a pinch of salt onto the drained noodles.
2. Heat the oil until it’s just on the edge of smoking.
3. Pour it straight over the pile — it should hiss and sizzle on contact.
4. Splash in the soy sauce and vinegar, toss everything through, and eat right away.

Tips for Pulling and Cooking

Worth reading once; after that the steps above are all you need at the stove.

Pulling

• It’s mostly the rest. Relaxed, room-temperature dough stretches almost on its own. If a piece keeps springing back, give it another twenty minutes rather than forcing it — under-rested or still-cold dough is the usual reason it fights you.
• Wake it up first. Press and stretch each piece by hand until it feels soft and elastic before you start pulling.
• Start even, go slow. An even rectangle thins evenly; thick spots stay fat and thin spots blow out. Keep your grip flat and loose — pull too fast or pinch too hard and it snaps. If it tears, pinch the ends back together or carry on from the break.
• The bounce is the point. A steady up-and-down slap against the counter thins the middle evenly — and it’s the sound the noodle is named for. Rhythm, not force.
• Straight to the pot. Pulled noodles slump and stick within a minute, so don’t let them sit around.

Cooking

• Big pot, hard boil, room to move, and don’t salt the water — the dough and dressing already carry the salt.
• Taste, don’t time. Two minutes is the ceiling; pull one out and check for a firm, chewy bite.
• Refresh the water once it turns cloudy and starchy if you’re cooking several batches, or the later noodles cook unevenly.