Pork shoulder, 3 lb roast pressure cooking time
Pork shoulder, 3 lb roast takes 60 to 75 minutes at high pressure in an electric cooker, with a natural release. A stovetop cooker reaches a true 15 psi against roughly 11 psi in most electrics, so stovetop times run shorter. Above 2,000 feet, add 5 percent to the time for every additional 1,000 feet.
Time at pressure
| Cooker | Pressure | Time | Release |
|---|---|---|---|
| Electric, high pressure | About 11 psi | 60 to 75 min | natural |
| Stovetop | 15 psi | 48 to 60 min | natural |
| At 5,000 feet, electric | About 11 psi | 69 to 86 min | natural |
| At 8,000 feet, electric | About 11 psi | 78 to 98 min | natural |
Why the time excludes come-up and release
The times above are time at pressure. A six quart electric cooker takes roughly ten to fifteen minutes to build pressure before the timer starts, and a natural release can add another ten to twenty at the end. A recipe that says twenty minutes can therefore occupy the better part of an hour, which is worth knowing before you plan dinner around it.
The release method is not a detail. A quick release drops the pressure suddenly and the liquid inside the food flashes to steam, which is what you want for vegetables that would otherwise overcook and exactly what you do not want for beans, which split, or for meat, which seizes.
Gear that fits these numbers
What this job needs
Ninja HyperHeat 9-in-1 Pressure Cooker, 6.5 Quart
Ninja's current pressure cooker, with a faster sear step than the Instant Pot equivalents before you ever bring it up to pressure.
Instant Pot Duo, 6 Quart
The one almost everyone starts with, and still the right answer for beans, stock and tough cuts.
Presto 6 Quart Stainless Steel Pressure Cooker
A stovetop cooker runs at a true 15 psi where electrics sit near 11, which is why stovetop times are shorter than every electric chart you will read.
Prices when last checked. They change often.
Frequently asked questions
How long does pork shoulder, 3 lb roast take in a pressure cooker?
60 to 75 minutes at high pressure in an electric cooker, with a natural release. On a stovetop cooker the same job runs about 48 to 60 minutes, because a stovetop unit holds a true 15 psi while most electrics sit nearer 11 psi and therefore run cooler.
How do I adjust this for altitude?
Above 2,000 feet, add 5 percent to the cooking time for every additional 1,000 feet. At 5,000 feet that turns 75 minutes into about 86 minutes, an increase of 15 percent. Water boils cooler as atmospheric pressure drops, so the pot reaches a lower absolute temperature at the same gauge pressure.
Where do the numbers on this page come from?
Typical ranges for electric cookers at roughly 11 psi, with stovetop equivalents at a true 15 psi. Nothing here comes from cooking test batches in our own kitchen, and we do not claim otherwise. Where the USDA or FSIS publishes a figure we quote it and link the source. Where we have no defensible figure we say so rather than estimate one.
Sources
Published figures, quoted as published. We do not generate our own time and temperature data.
How we research: we compare manufacturer specifications, owner manuals, published USDA and FSIS figures and recurring themes in verified owner reviews. We do not cook test batches or run instruments, and nothing here is professional food safety advice. When a figure is not published by a source we trust, we say so rather than estimate one.