Head-to-head · Best Pressure Cookers

All-American 921 Cast Aluminum Pressure Canner (21.5-Quart) vs Cosori 6-Quart 9-in-1 Electric Pressure Cooker (CMC-CO601-SUS)

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

All-American 921 Cast Aluminum Pressure Canner (21.5-Quart) comes out ahead by a narrow margin (4.7 vs 4.5). The gap is mostly about Large-batch home canners and homesteaders processing pints and quarts at season's end — particularly buyers who want a lifetime-purchase tool with no gasket maintenance and verifiable pressure control across 5, 10, and 15 psi. — read the strengths below before deciding.

Higher ratedRanked #1 in Best Pressure Cookers

All-American 921 Cast Aluminum Pressure Canner (21.5-Quart)

4.7

3 sourcesall derived$499.95as of Aug 1

American homesteaders treat the 921 as a generational tool. Its patented metal-to-metal seal removes the single most common failure point on pressure canners, the rubber gasket, and the heavy cast aluminum body with triple bayonet clamps holds pressure with virtually no siphoning through long quart-jar processing. At 21.5 quarts it lands at the practical sweet spot for batch canning (19 pints or 7 quarts). All-American's lifetime warranty and 30+ year owner reports back up the heirloom-purchase framing.

Strengths

— Patented metal-to-metal sealing system — no rubber gasket to dry out, replace, or fail in service
— Built in Wisconsin from heavy cast aluminum with a lifetime warranty and 30+ year owner reports
— 21.5-quart capacity processes 19 pint jars or 7 quart jars in a single load — the canning standard

Watch-outs

— Heavy — 17.75 lb empty, well over 40 lb fully loaded with jars and water
— Premium price puts it well above gasket-sealed canners in the same capacity class
— Lid can be hard to remove after a long process without occasional oiling of the sealing surface

$499.95 · Check Price on Amazon Full review →

Ranked #3 in Best Pressure Cookers

Cosori 6-Quart 9-in-1 Electric Pressure Cooker (CMC-CO601-SUS)

4.5

2 sourcesall derived$94.43as of Aug 1

Sous vide, ferment and six pressure levels at budget money is the Cosori 6-Quart 9-in-1's pitch, and it lands without premium multi-cooker pricing. Kitchenonomy called it 'one of the best value propositions in electric pressure cookers today,' and the 12 documented safety features, 2-year warranty and stainless-steel nonstick inner pot represent real engineering at the $90 price point. The compromises are predictable: modest 1100W heating, manual steam release, and a ceramic coating that wants softer utensils.

Strengths

— 9-in-1 functionality including pressure cook, sous vide, ferment, slow cook, sauté, and sterilize at a $90 price point
— Six adjustable pressure levels — wider range than most budget electric pressure cookers
— Twelve documented safety mechanisms plus a double-layer anti-scalding lid

Watch-outs

— 1100W heating element is modest — slower heat-up than higher-wattage electric multi-cookers
— Manual steam release only — no automatic Quick / Pulse / Natural modes like the Breville Fast Slow Pro
— Ceramic nonstick coating shows wear with aggressive utensil use over multi-year ownership

$94.43 · Check Price on Amazon Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

All-American 921 Cast Aluminum Pressure Canner (21.5-Quart)

The 921 is the heirloom large-batch workhorse — the right pick when canning capacity and gasket-free reliability matter more than the lower cost of a gasket-sealed alternative. Compared to the Presto 01362 6-Quart Stainless Steel Pressure Cooker, the 921 is built for a fundamentally different job — that Presto is a 6-quart everyday stovetop cooker, the All-American is a 21.5-quart batch canner. It is also the wrong tool for general weeknight cooking compared to the Kuhn Rikon Duromatic Inox 5L Side-Handle Pressure Cooker, the Fissler Vitavit Premium 8.5 Quart Pressure Cooker, or any electric multi-cooker like the Breville Fast Slow Pro BPR700BSS — those are cookers built for everyday meals; this is a canner first.

Cosori 6-Quart 9-in-1 Electric Pressure Cooker (CMC-CO601-SUS)

Budget alternative to the Breville Fast Slow Pro BPR700BSS — both are 6-quart electric multi-cookers, but the Cosori costs roughly one third the price. Trade-offs: the Breville has dual top-and-bottom sensors, eight selectable pressure levels, hands-free auto steam release, and brushed stainless build; the Cosori still delivers six adjustable pressure levels and a real 9-in-1 feature set at $90. Versus the Presto 01362 6-Quart Stainless Steel Pressure Cooker (same capacity, similar price), the Cosori trades stovetop induction independence for programmable electric convenience. The stovetop premium tier — Kuhn Rikon Duromatic Inox 5L Side-Handle Pressure Cooker — is the architecturally different choice if you want heirloom durability over programmable convenience.

Specs side-by-side

Spec	All-American 921 Cast Aluminum Pressure Canner (21.5-Quart)	Cosori 6-Quart 9-in-1 Electric Pressure Cooker (CMC-CO601-SUS)
Capacity	21.5 quarts	6 quarts (5.7 L)
Type	Stovetop pressure canner / cooker	Electric multi-cooker (pressure / slow / sous vide / ferment / sauté)
Pressure Settings	5, 10, 15 psi (selectable weights + dial gauge)	—
Material	Heavy cast aluminum	Stainless steel, fingerprint-resistant housing
Seal Type	Patented metal-to-metal (no gasket)	—
Jar Capacity	19 pints or 7 quarts per load	6.0 qt
Weight	17.8 lb	11.9 lb
Dimensions	15.375 in H x 12.25 in dia	12.8 x 12.8 x 14.4 in
Country of Manufacture	USA (Hillsville, Wisconsin)	—
Warranty	Lifetime	2-year limited
Heat Source	Gas, Electric, Glass-Top	—
Diameter	12.3 in	12.8 x 12.8 in
Pressure Levels	5, 10, or 15 PSI	6 adjustable
Pressure	15 PSI (single)	Low Pressure: 5.1–8 psi / High Pressure: 9.4–12.3 psi
Includes	Canning racks and instruction/recipe book	—
Inner Pot	Heavy-duty cast aluminum	Stainless steel with ceramic nonstick coating
Power	—	1100W
Programs	—	9-in-1 (pressure, rice, steam, slow cook, sauté, sous vide, ferment, sterilize, keep warm)
Safety Features	—	12 mechanisms including double-layer anti-scalding lid and safety lid lock
Steam Release	—	Hands-free auto (30° backward-angled)
Wattage	—	1100 watts

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