DISH RESEARCH · Drink

Beijing douzhi

Also known as: Douzhi, Fermented mung bean juice

Beijing douzhi. Sean St John’s Tea & Oranges account describes a fermented mung-bean drink with a distinctly sharp, tangy flavour. He connects douzhi with the liquid left after mung-bean starch is separated for noodles and with Beijing breakfast shops. This draft follows his shorter-fermentation home version, including its separately published fried-ring accompaniment; it does not treat that adaptation as the only Beijing formula. His About page supplies the author attribution and his account of living in Beijing since 2015.

Beijing douzhi — illustrative food image

About Beijing douzhi

Research draft based on the references below. These notes describe particular recipes and presentations; ingredient connections are still being reviewed.

Beijing douzhi. Sean St John’s Tea & Oranges account describes a fermented mung-bean drink with a distinctly sharp, tangy flavour. He connects douzhi with the liquid left after mung-bean starch is separated for noodles and with Beijing breakfast shops. This draft follows his shorter-fermentation home version, including its separately published fried-ring accompaniment; it does not treat that adaptation as the only Beijing formula. His About page supplies the author attribution and his account of living in Beijing since 2015.

Flavour. St John calls douzhi funky and sharply tangy, and candidly says he finds the usual drink too strong after a few sips. His home version uses a shorter fermentation to reduce that intensity. In his breakfast description, the sour liquid is accompanied by sharp pickled vegetables and salty pickle pieces. These are the writer’s tasting descriptions of this drink and its service context; no probiotic, therapeutic or fermentation-safety claim is adopted.

Texture and appearance. The selected method describes a pourable slurry rather than a sludgy one, followed by a grey-green fermented liquid and a slightly thickened, glossy finish. The separately served jiaoquan begin crisp and soften when they soak, giving a chewy bite alongside the pickle crunch. The home recipe says warm or room-temperature service, while the municipal description refers to boiled juice. That discrepancy remains unresolved, and the recipe’s printed 3250 g flour quantity is retained as an unvalidated source error candidate.

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Dish type

Drink

Fermented mung-bean drink with a separate fried-ring accompaniment

Preparation

Read the preparation

The home recipe describes rinsing/soaking beans, cooking them, blending with cooking liquid, straining through cheesecloth or a fine-mesh strainer, fermenting in a covered jar and straining again. Its final heating step specifies a slight glossy thickening without boiling, followed by warm or room-temperature service. The municipal account describes boiled juice, so the difference is recorded rather than resolved. Jiaoquan are separately mixed, kneaded on a floured surface, rested, shaped, fried in a wok and drained on paper towels. These are attributed source methods, not validated fermentation or cooking instructions.

Source limits: Literal3250g all-purpose flour at block44 appears inconsistent with100ml water; no correction to250g or validated recipe quantities.

Source limits: Selected home method cooks mung beans before fermentation and says do not boil final drink, warm or room-temperature service. Municipal source29 describes boiled juice; no reconciliation, clinical probiotic assertion or validated fermentation-safety claim.

Source limits: Municipal source28 cellophane-noodle by-product versus29 bean-curd by-product wording retained as source discrepancy.

Source limits: Optional alum, unnamed dough/frying oils, flour grain, zha cai product formula and provider handling remain unadjudicated.

Serving presentation

St John describes small bowls with pickled vegetables and fried dough rings. His breakfast-shop account puts fritters and pickles in the bowl before hot sour liquid is poured over; the home instructions instead say warm or room temperature and rings for dipping. Both service descriptions stay attributed. Ring count, zha cai and scallion amounts come from this home recipe, without asserting that every provider serves them.

Source limits: Municipal hot/boiled account differs.

Before you order

Ask which douzhi recipe and heating method the provider uses, which pickles and fried rings accompany it, and what the rings’ flour, oil and optional alum declarations are. Ask about the actual fermentation process and the use of bowls, jars, blender, strainers or cheesecloth, pot, working surface, wok, draining materials and serving utensils. These are questions prompted by documented stages; cleaning, shared use and provider-specific contact are unknown. A cultural description or an ingredient list does not establish suitability for someone with a food allergy.

Source limits: Actual provider formula, utensils, reuse, substitutions and fermentation controls unknown; no allergy-safety conclusion.

Prepare your questions →

Ingredients in Beijing douzhi

Selected version: Sean St John’s shorter-fermentation home douzhi and published jiaoquan component. The drink lists 250 g dried mung beans, 2–2½ litres water for soaking/cooking and ¼ teaspoon salt. Its method also uses rinsing water, approximately 750 ml soaking water, cooking liquid and optional extra hot water to adjust the strained slurry. The ring dough lists the literal 3250 g all-purpose flour, 100 ml warm water, 1 teaspoon salt, ¾ teaspoon baking soda, optional 1 teaspoon alum and 35 ml unspecified oil. That flour quantity has not been corrected or validated. It also uses flour for the working surface and 1–1½ litres unspecified frying oil. Service lists 1–2 tablespoons zha cai, 1 teaspoon chopped scallions and 2–3 fried rings. The zha cai formula, oil identity and flour grain are unconfirmed; jiaoquan remain a component made from the separate dough observations, not an extra unexplained ingredient.

Source limits: Literal3250g all-purpose flour at block44 appears inconsistent with100ml water; no correction to250g or validated recipe quantities.

Source limits: Municipal source28 cellophane-noodle by-product versus29 bean-curd by-product wording retained as source discrepancy.

Source limits: Optional alum, unnamed dough/frying oils, flour grain, zha cai product formula and provider handling remain unadjudicated.

Dried mung beans^[3]Recipe ingredient
Water^[3]Recipe ingredient
Salt^[3]Recipe ingredient
All-purpose flour^[3]Recipe ingredientSource-specific formulation remains unresolved.
Warm water^[3]Recipe ingredient
Salt^[3]Recipe ingredient
Baking soda^[3]Recipe ingredient
Alum^[3]Identity unresolved
Unspecified oil^[3]Identity unresolved
Unspecified oil^[3]Identity unresolved
Zha cai^[3]Recipe ingredientSource-specific formulation remains unresolved.
Scallions^[3]Recipe ingredient
Jiaoquan fried rings^[3]Identity unresolved
Water^[3]Recipe ingredient
Additional hot water^[3]Optional
Flour^[3]Recipe ingredient

These foods describe the cited recipe. Ask the kitchen about its version and any additional ingredients or handling.

Origins & food traditions

Explore the countries and cooking traditions associated with this dish. These connections do not establish a single birthplace or limit where the dish is eaten today.

St John connects douzhi with mung-bean starch-noodle production and traditional Beijing breakfast shops. The municipal food-culture source also calls it a mung-bean processing by-product, although its adjacent passage switches to bean-curd wording. These accounts support Beijing association and breakfast context; they do not establish an exclusive inventor, date of origin or a reconciled production history.

Source limits: Historical dates not independently established.

Countries

China

Cuisines & regions

Beijing cuisine

Associations in the cited sources

These describe source-specific cultural or geographic connections. Catalogue links may still need review.

Cooking traditions: Beijing cuisine

AI-generated illustration of one possible presentation. Recipes and ingredients vary; the image does not establish allergen content.

Sources & references

Recipe and personal tasting: Sean St John, Tea & Oranges, Fermented Mung Bean Juice (Douzhi), with authorship supported by his saved About page. Separate context: Visit Beijing’s douzhi description and the municipal Traditional cuisine of Beijing page. Recipe quantity and heating contradictions remain explicit. The exact existing FSA guidance provides generic information about declarations and cross-contact controls, without verifying this recipe or any venue.