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Lye Water
Imparts a faint mineral, slightly bitter, and distinctly 'alkaline' note to doughs; the signature taste in ramen noodles and mooncake pastry.
Lens analyzedLye water is a highly alkaline aqueous solution of sodium carbonate and potassium carbonate used in small quantities in baking and noodle-making to raise pH, producing a characteristic springy chew, golden color, and distinctive flavor.
Where it comes from
Lye water, traditionally derived from plant-ash solutions, has long been used in Chinese kitchens to give ramen and lo mein noodles their springy bite and to give mooncake and zongzi their characteristic color and chew. North American cooks can buy small bottles in Chinese grocery stores, where it is sold as kansui or alkaline water.
Buying it
Available in small bottles at Asian grocery stores, typically labeled 'lye water' or 'alkaline solution'; use the precise amount specified in recipes as even small excesses alter flavor and texture significantly.
Storing it
Store tightly sealed in a cool, dark place; it remains stable for years if kept away from acidic environments.
Keeps about 1 year in the pantry.
Out of lye water? Good swaps
- Baked baking soda
- Potassium carbonate solution
General cooking guidance — always check the labels on the products you use. Listahan’s allergen checks run automatically when you plan a recipe in the app. Not medical advice.
Recipes that use lye water
Common questions about lye water
Is lye water vegan?
Lye Water is generally plant-based and suitable for a vegan diet, but brands differ — confirm on the label.
What can I use instead of lye water?
Good swaps include Baked baking soda, Potassium carbonate solution. Each behaves a little differently — see the swaps above for notes, and always check labels for allergens.
How do I store lye water?
Store tightly sealed in a cool, dark place; it remains stable for years if kept away from acidic environments. It keeps about 1 year in the pantry.
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Make lye water about your kitchen — with Listahan Pro
Everything above is free, forever. Pro adds the Household Lens — the same food, seen for your family:
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Checked for each member
Flags lye water per person against your household's allergies and school rules — not just a generic "contains" tag.
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Pantry-aware
Knows whether you already have it, what is running low, and the best swap from what is in your kitchen tonight.
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What it costs near you
A real price from the Presyo community index, so you can plan the budget — not guess.
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Your household memory
Who likes it, plus your own private notes — brand, where you keep it, who skips it.
Allergen safety is always free — Pro adds the automation, never the safety.
Cook with lye water — safely
Plan a recipe in Listahan and the household allergen check runs automatically — every plan, every swap, every lunchbox. Safety is never paywalled.