Cellophane / Glass Noodles — Fen Si (粉絲, Mung Bean Starch)
What it is
Fine, wiry, translucent "glass" or "bean thread" noodles made from mung bean starch, going from stiff and white when dry to clear, slippery, and springy when cooked. Also called dong fen or "bean threads."
How it's made
Mung bean starch is extracted, gelatinized with hot water, extruded into thin strands, and dried. Pure starch — no protein, no gluten — which is why they cook clear and stay resilient.
Flavor profile
Essentially neutral and faintly clean, a flavor sponge. Texture is the appeal: slippery, bouncy, and springy with a satisfying chew that holds in liquid far better than rice vermicelli.
Culinary uses
Soaked then used in ants climbing a tree (mǎyǐ shàng shù, minced pork clinging to glass noodles), hot pots, stuffed in steamed garlic-scallop shells, in soups, and in cold dressed salads. Their slipperiness and flavor absorption make them ideal for saucy and brothy dishes. Deep-fried dry, they explode into a crisp nest.
Regional variations
Mung-bean fen si is the Chinese benchmark; the broader family includes Japanese potato-starch harusame, Korean sweet-potato dangmyeon, and Southeast Asian woon sen — each with a different chew (sweet-potato being the chewiest).
Cultural & historical context
Glass noodles are an ancient product of Chinese starch-processing know-how, valued for their keeping quality (dried, light, shelf-stable) and their festive, translucent appearance. They are a backbone of vegetarian Buddhist cooking and a ubiquitous pantry staple across East Asia.
Reference notes
- Tags: chinese, glass-noodle, starch-noodle, mung-bean, gluten-free, hot-pot-noodle, salad-noodle
- Base: mung bean starch
- Related ingredients: minced pork, garlic, soy, hot-pot broth
- Related cuisines: Chinese, (pan-East/Southeast Asian)
- Suggested Cuisinopedia links: → Harusame (Japanese), → Dangmyeon / Japchae (Korean), → Woon Sen (Thai), → Mung Bean (ingredient entry)
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