Jiuniang (sweet fermented glutinous rice)
Chinese sweet fermented glutinous rice: steamed rice and a mixed jiuqu starter, where mould enzymes release sugar and yeast makes a little alcohol, eaten with its sweet liquid.
Equipment · All-in-one appliances
Electric pressure multicooker
electric multi-cooker · electric pressure cooker multicooker · electric multicooker
A countertop electric cooker combines pressure cooking with model-specific functions such as sautéing, slow cooking, rice cooking and low-temperature programs. Settings do not transfer to pressure canning.
Several cooking modes in one electric vessel
An electric pressure multicooker combines a powered heating base and removable inner pot with a locking lid and pressure-release hardware. Depending on the revision, the same appliance may also sauté with the lid open, slow-cook, steam, cook rice, warm food or run a yogurt program. Those functions do not behave alike: pressure cooking uses the sealed lid and pressure system, while yogurt or incubation settings are low-temperature holds and sautéing is an open-pot operation.
The equipment class includes many manufacturers and model revisions. Program names, button layout, accessories, voltage, pot size and temperature control can change even within one brand family. The controls of a specific Duo are useful evidence for that model, not a specification for every electric multicooker.
A documented low-temperature use
The September 2016 Instant Pot IP-DUO60/80 manual documents a Yogurt program with three settings. It assigns Normal to yogurt, Less to jiu niang (sweet fermented glutinous rice), and More to milk pasteurization for those models. The manual gives a 30–34°C range for Less; this is a model-specific control description, not a universal temperature setting for the food.
For the documented jiu niang method, the rice mixture sits in its own lidded glass or ceramic vessel on the rack, with water in the multicooker's inner pot around it. The outer machine provides gentle heat; the fermentation is not conducted in the pressurized cooker chamber. This is a useful distinction between using the same appliance for pressure cooking and using it as a warm bath.
Sources for this section
Pressure cooking is a separate operation
In pressure mode, the lid locks and the appliance heats liquid to produce steam pressure. The current Duo 6QT illustrates common parts of the class: Instant Pot lists a removable 18/8 stainless inner pot with a tri-ply bottom, a stainless steamer rack, a locking lid and an easy-release steam switch. These are facts about that current model, not a material list for all brands.
The product manual describes pressure cooking, yogurt incubation and other modes as distinct operations. Follow the exact machine's instructions for minimum liquid, fill limits, valve inspection, and safe release. A yogurt setting on one model should not be assumed to exist or perform identically on another.
Not a pressure canner
A multicooker may pressure-cook food, but that capability does not make it a tested home pressure canner. The National Center for Home Food Preservation says its pressure-canning processes were developed for stovetop canners and does not recommend transferring those schedules to electric multi-cookers. It explains that a pressure or temperature reading in the outer vessel does not establish how quickly heat reaches the coldest point inside jars, and that the full heating and natural-cooling behavior matters.
For that reason, a front-panel canning label or a similar pressure display is not enough to establish a safe process. This equipment entry documents cooking and model-specific warm functions; it does not validate any canning schedule.
Sources for this section
Model and market evidence
The current US Duo 6QT is one example of an electric pressure multicooker. Its product page lists seven cooking functions, a six-quart pot, 1000 W and 120 V/60 Hz. The 2016 North American manual covers earlier six- and eight-quart Duo variants, while Instant Pot UK maintains a separate manual catalog for models sold with local support. Their differences show why program ranges, accessories and electrical ratings should be checked against the actual unit.
These sources establish modern manufactured equipment and specific contemporary market examples. They do not identify a single inventor or place of manufacture for the wider class, nor do they show that all market variants share yogurt or fermentation programs.
History
Instant Pot's September 2016 IP-DUO60/80 manual, current Duo 6QT product information, and current National Center for Home Food Preservation guidance.
Equipment details
CapacityCapacity varies by model. The current Duo 6QT is one documented six-quart example; the 2016 IP-DUO60/80 manual also covers an eight-quart model, but this is not a category-wide range.
SizeNo category-wide dimensions are established; dimensions and body shape vary by model.
PowerElectric Electric countertop appliance. The current US Duo 6QT is rated 1000 W, 120 V/60 Hz; international variants differ, so check the exact model's rating plate.
How you get oneBought, manufactured Factory-made domestic appliances sold under multiple brands and model families; this entry describes the equipment class, not one named unit.
CareFollow the exact model's manual. Check the pressure lid, sealing ring, release path and anti-block components as its instructions specify; keep the powered base dry and clean removable parts only as directed.
Made of
- Stainless steel — Removable inner pot on a documented current model
Instant Pot identifies the current Duo 6QT pot as 18/8 stainless steel with a tri-ply bottom; other models and components differ. - Silicone sealing ring and pressure-release parts — Lid sealing and pressure control on documented Duo revisions
The 2016 IP-DUO60/80 manual lists a food-safe silicone ring, steam release handle, float valve and anti-block shield. This is model-specific component evidence. - Steamer rack — Raises food or a separate vessel above the inner-pot base
A stainless steamer rack is included with the current Duo 6QT; accessory shapes and supplied parts vary.
Limits
Electric pressure multicookers are not substitutes for pressure canners. NCHFP does not recommend using its tested pressure-canning schedules in electric multi-cookers; a pressure display or canning button does not validate jar heating.
Source →A lower-temperature fermentation or yogurt program is model-specific and separate from pressure cooking. The 2016 IP-DUO60/80 manual documents a jiu niang setting for those models only; it does not establish the same range or function for other machines.
Source →Use the pressure lid, liquid amount, fill limits and release procedure in the exact model's manual; do not force a lid open while pressure remains.
Source →Places
United States
Modern adaptation · Country evidenceDocuments a current US-market Duo and US preservation guidance; it does not establish the equipment class's invention or manufacturing origin.
United Kingdom
Modern adaptation · Country evidenceInstant Pot UK lists manuals for the Duo and other multicooker revisions; this is one market example, not a claim that the whole category has uniform availability.
Related
Used for
Read more
What an appliance cannot reproduce
A machine can supply heat, cold, airflow, pressure or a vacuum. Many traditional foods also depend on sunlight, frost and running water, months of microbial work, or a tested kill step, and these are the places where an appliance stops.
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Sources
Instant Pot Company; manual hosted by Williams-SonomaEquipment · Model specific function · Safety · Care
Programmable Electric Pressure Cooker User Manual, Models IP-DUO60/80 (September 2016)The manual describes the IP-DUO60 and IP-DUO80 as six- and eight-quart electric multicookers with pressure, sauté, slow-cook, rice, steam, yogurt and warm functions.
Its Yogurt program has model-specific Normal, Less and More settings; Less at 30–34°C is identified with jiu niang for these models.
The manual's jiu niang arrangement uses separate lidded glass or ceramic food containers held in water inside the inner pot; the food is not placed directly under pressure.
The manual gives model-specific fill and pressure-release safeguards and North American voltage information; later products may differ.
Cited in: Several cooking modes in one electric vessel; A documented low-temperature use; Pressure cooking is a separate operation; Model and market evidence
Instant Pot BrandsEquipment · Model example · Materials · Specifications
Instant Pot Duo 6QT Multi-Use Pressure CookerThe current Duo 6QT lists seven cooking functions, including pressure cooking, sauté, steaming, slow cooking, rice, yogurt and warming.
The current Duo 6QT has a six-quart inner pot described as 18/8 stainless steel with a tri-ply bottom, a stainless steamer rack, and ratings of 1000 W and 120 V/60 Hz.
These details are one current model example, not specifications for all multicookers.
Cited in: Several cooking modes in one electric vessel; Pressure cooking is a separate operation; Model and market evidence
National Center for Home Food Preservation, University of GeorgiaSafety · Limits
Can I Can in a Multi-Cooker?NCHFP does not support transferring its tested USDA pressure-canning processes to electric multi-cooker appliances.
The guidance explains that pressure alone does not establish the temperature or heat distribution inside jars, and that come-up and cool-down behavior also matter.
Cited in: Not a pressure canner
National Center for Home Food Preservation, University of GeorgiaSafety · Limits
Canning in Electric Multi-CookersNCHFP says its pressure-canning recommendations were developed for stovetop pressure canners and are not recommended for electric pressure multi-cookers.
The presence of a canning button or manufacturer's canning directions does not make NCHFP processes transferable to a different appliance.
Cited in: Not a pressure canner
Instant Pot UKMarket · Model variation
Product ManualsThe official UK support page lists Duo and other distinct multicooker families and manuals, illustrating that program labels and model revisions vary by market.
Cited in: Several cooking modes in one electric vessel; Model and market evidence
Wikimedia Commons; photograph by Tony WebsterImage reference
Instant Pot Pressure Cooker Vegetables and Quinoa (44383321600).jpgThe photograph shows cooked food in the removable inner vessel of an Instant Pot; it does not identify a Duo model.
The file page licenses the photo under CC BY 2.0.