Grains & Rice

Buckwheat Noodle

Chewy noodles made from buckwheat, used in Korean naengmyeon and similar cold-noodle dishes.

Buckwheat noodles are made from buckwheat flour, often blended with other starches for elasticity, giving a springy, chewy texture and nutty flavor. In Korea they form the base of naengmyeon, served cold in icy broth or with spicy sauce. They are also the foundation of Japanese soba and other regional noodle dishes.

Buckwheat noodles are chewy, earthy noodles ground from the seeds of the Fagopyrum esculentum plant—not a grain at all, but a seed related to rhubarb and sorrel. This botanical fact matters: pure buckwheat noodles are naturally gluten-free, though commercial varieties frequently blend in wheat flour to improve elasticity and reduce cost. The noodles have a distinctive nutty, slightly bitter flavor that intensifies with higher buckwheat content, and a firm, resilient chew that holds up beautifully in both icy cold broths and hot soups. Buckwheat was first cultivated around 6000 BCE in Southeast Asia, spreading eastward to Korea and Japan, where these noodles anchor two of the region's most beloved noodle traditions: Korean naengmyeon and Japanese soba. Korean buckwheat noodles tend toward the very thin (1–1.5 mm) and are prized for their exceptional chew, while Japanese soba runs slightly thicker (1.5–2 mm) and ranges from simple weeknight kake soba to the ceremonial heights of chilled zaru soba served on a bamboo draining rack. The texture is the key identifier—properly cooked buckwheat noodles should offer real resistance when you bite, not the soft give of wheat noodles.

Measured in: g
Storage: Pantry

Allergens

Gluten

Types & varieties

Memil Naengmyeon

Traditional Korean 100% buckwheat noodles, thin and very chewy—the canonical base for cold naengmyeon in broth or mixed with sauce

Chik-sun Naengmyeon

Extra-thin Korean buckwheat noodles, the standard choice for mul-naengmyeon (cold broth version)

Jaengban Naengmyeon

Korean buckwheat noodles served on a plate with sauce for tableside mixing, not in broth

Kake Soba

Simple Japanese hot buckwheat noodle soup in light dashi-based broth with minimal garnishes, a winter staple

Zaru Soba

Chilled Japanese soba served on a bamboo draining rack with cold dipping sauce (mentsuyu), nori, and wasabi

Oroshi Soba

Japanese soba topped with grated daikon radish, served either hot or cold

100% Buckwheat Soba

Truly gluten-free; more fragile, cooks faster, stronger bitter flavor, prone to breaking if handled roughly

Wheat-Buckwheat Blend

The most common commercial dried soba; easier to shape and handle, more elastic, longer shelf life, milder flavor

Reading the Ingredient Label

Not all buckwheat noodles are equal. Japanese soba packages often list buckwheat as a minority ingredient—30–50% is common—with wheat flour providing body and workability. In some cases, wheat flour may even appear as the first ingredient. Korean naengmyeon noodles labeled as '100% buckwheat' or 'memil' are the real thing but cost significantly more and require more careful cooking. If gluten is a concern, look for explicit 'gluten-free' labeling, not just high buckwheat percentages, since cross-contamination occurs in facilities that also process wheat.

First ingredient should be buckwheat flour for authentic flavor
Look for '100% buckwheat' or 'memil' on Korean products for true gluten-free
Toasted buckwheat flour (kuro-iri) creates darker noodles with roasted intensity

The Ice-Cold Tradition

The defining characteristic of Korean naengmyeon is the broth temperature—chilled to near-freezing with visible ice crystals at the edges. This isn't theatrical; the dramatic temperature contrast is central to the eating experience. Cool the beef broth completely, then place the pot in a larger vessel filled with ice water and a handful of salt, which lowers the temperature below 4°C (39°F). The cold broth numbs the lips slightly and makes the noodles seem even chewier. Korean pear in the broth isn't just garnish—the enzymes help keep the broth clear while providing sweetness that balances the vinegar and the slight bitterness of the buckwheat.

Chill broth until ice crystals form at the edges—agar or xanthan are never used to thicken
Korean pear (bae) keeps the broth clear; regular pear may cause cloudiness
Serve in pre-chilled bowls to maintain temperature throughout the meal

Common uses

Korean mul-naengmyeon—ice-cold beef broth with cucumber, Korean pear, boiled egg, and sliced beef or cold porkKorean jaengban naengmyeon—cold buckwheat noodles on a plate with spicy mustard-based sauce mixed tablesideJapanese zaru soba—chilled noodles on bamboo rack with cold mentsuyu dipping sauce, nori, and fresh wasabiHot kake soba in light dashi broth with green onions, especially during cold monthsNoodle salad tossed with sesame or peanut sauce, cucumber, shredded carrots, and herbsStir-fried soba or naengmyeon—adapted jjajangmyeon style with sauce and vegetablesCold noodle bowls with sliced chicken, seasonal vegetables, and tangy rice vinegar dressingOroshi soba—hot or cold noodles topped with freshly grated daikon and a splash of soy sauce

Tips & pitfalls

Salt the boiling water generously—about 1 tablespoon per 4 liters—to help noodles hold their shape and season from within
Never add noodles to water that isn't at a rolling boil; add them gradually and stir once gently when they first float to prevent sticking to the pot bottom
Test doneness 1–2 minutes before the package time; they should be just tender with definite chew remaining, not soft throughout
Drain immediately and rinse under cold running water for 2–3 full minutes until completely cool—this removes surface starch and stops cooking instantly
After rinsing cold noodles, toss with a few drops of sesame oil to prevent clumping while you prepare the rest of the dish
For hot dishes, briefly blanch rinsed noodles in warm water or ladle hot broth over them—never return them to a full boil or they'll turn mushy
100% buckwheat noodles require gentler handling; use a wide strainer, never stir aggressively, and expect some breakage—this is normal, not a flaw
Store dried noodles away from strong odors—buckwheat is highly porous and will absorb flavors from nearby garlic, onions, or spices
The most common mistake is overcooking; buckwheat noodles should feel firm when you bite, with perceptible resistance, even in hot soups
If noodles break excessively during cooking, the flour was likely ground too coarsely or the dough was too dry—this is more common in handmade or artisan noodles
Check ingredient lists carefully if avoiding gluten; many Japanese soba brands contain mostly wheat flour despite the buckwheat-forward flavor and color

Nutrition

471kcal

Energy

1971 kJ · per 100 g

Where the calories come from

Protein 9%Carbs 52%Fat 39%

Protein

10.9g

22% DV

Carbs

63.6g

23% DV

Fat

21.2g

27% DV

Fiber

6.7g

24% DV

Sugars

of which

Sodium

866mg

38% DV

Notable micronutrients

Selenium52% DV

Thiamin (B1)47% DV

Iron36% DV

Riboflavin (B2)31% DV

Folate31% DV

Niacin (B3)29% DV

Source · USDA FoodData Central · approx. Noodles, chinese, chow mein

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In the shops

Matched grocery products

Organic Buckwheat Toasts
SANTIVERI · kg · Bonpreu
€2.85
Organic Buckwheat Toasts
PAIN FLEURS · kg · Bonpreu
€2.99
BONPREU Organic Buckwheat
BONPREU · kg · Bonpreu
€1.99
Organic Buckwheat Salt-Free Toasts
PAIN FLEURS · kg · Bonpreu
€2.99
DALLA COSTA Buckwheat Pasta Tubetti
DALLA COSTA · kg · Bonpreu
€1.75
Thin Buckwheat Dark Chocolate Cookie
SANTIVERI · kg · Bonpreu
€2.85

Good to know

Scientific Name: Fagopyrum esculentum (buckwheat plant)
Typical Diameter: Thin (1–1.5 mm) for naengmyeon; medium (1.5–2 mm) for Japanese soba
Cooking Time: 4–7 minutes for dried; 1–2 minutes for fresh
Gluten Status: Pure buckwheat is gluten-free; most commercial varieties blend with wheat flour—check the label
Primary Flavor: Nutty, slightly bitter, earthy; intensifies in 100% buckwheat varieties
Yield: Dried noodles triple in weight when cooked
Protein Content: ~13–15% by weight in buckwheat flour
Shelf Life (Dried): 12–18 months in cool, dry storage, away from strong odors

Substitutes

Japanese Soba (commercial blend) — Use any dried buckwheat-wheat blend soba; cooking time and method are identical, though flavor will be milder and texture more elastic
Cellophane Noodles (glass noodles) — For cold Korean-style dishes, mung bean starch noodles offer similar chewy resilience but lack the nutty buckwheat flavor entirely; adjust cooking time to 5–8 minutes
Udon Noodles — Wheat noodles with a softer, broader chew; acceptable for hot noodle soups but lack the earthy nuttiness and work poorly in cold preparations
Ramen (wheat-based) — Comparable chewiness but neutral flavor; acceptable only for hot soups, not for cold applications where buckwheat's earthiness defines the dish

Pairs with

Beef broth (mul-naengmyeon)Korean pear (bae)Yellow pickled radish (danmuji)Rice vinegar Soy sauceSesame oil and toasted sesame seedsHot mustard (pyeongang)Dashi (Japanese)Nori (roasted seaweed)WasabiGreen onions and cucumberSoft-boiled egg

Also called

Naengmyeon · Memil Guksu