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.

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 #2 in Best Pressure Cookers

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

4.7

$500

The 921 is the canning workhorse American homesteaders treat as a generational tool. Its patented metal-to-metal seal eliminates the single most common failure point on pressure canners — the rubber gasket — and the heavy cast aluminum body with triple bayonet clamps maintains pressure with virtually no siphoning during long quart-jar processing. At 21.5 quarts it hits the practical sweet spot for batch canning (19 pints or 7 quarts), and All-American's lifetime warranty plus 30+ year owner reports back 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

$500 · Buy at allamerican1930.com Full review →

Ranked #5 in Best Pressure Cookers

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

4.5

$90

The Cosori 6-Quart 9-in-1 is the budget electric pressure cooker for buyers who want a real feature set — sous vide, ferment, six pressure levels — without paying 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 deliver 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

$90 · Check Price on Amazon Full review →

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	—
Seal Type	Patented metal-to-metal (no gasket)	—
Jar Capacity	19 pints or 7 quarts per load	—
Weight	17.75 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
Power	—	1100W
Pressure Levels	—	6 adjustable
Programs	—	9-in-1 (pressure, rice, steam, slow cook, sauté, sous vide, ferment, sterilize, keep warm)
Inner Pot	—	Stainless steel with ceramic nonstick coating
Safety Features	—	12 mechanisms including double-layer anti-scalding lid and safety lid lock

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