How Long to Cook Potatoes in a Pressure Cooker

On this page (10 sections)

1. How long do potatoes take in a pressure cooker?
2. Does the size of the potato change the cooking time?
3. Should you steam potatoes or cook them in water?
4. How do you cook potatoes in a pressure cooker step by step?
5. Why do potatoes come out undercooked or mushy?
6. How long do you cook potatoes for mashing or potato salad?
7. How does altitude affect potato cooking times?
8. Which pressure cooker works well for potatoes?
9. What should you do after the potatoes are cooked?
10. The bottom line on how long to cook potatoes in pressure cooker

Cubed potatoes take 5 to 7 minutes at high pressure, and whole potatoes take 10 to 15 minutes. Add a couple of minutes for larger potatoes or higher altitudes, and use a quick release so they don't overcook.

Potatoes cook fast under pressure because the sealed pot holds steam above 212°F. Size, variety and altitude decide how long to cook potatoes in a pressure cooker, so the ranges below assume high pressure and a 6-quart pot.

How long do potatoes take in a pressure cooker?

Plan on 5 to 15 minutes depending on how the potatoes are cut. Small pieces cook quickly, while whole potatoes need the longer end of the range.

Add 1 to 2 minutes for starchy russets if you want them soft enough to mash. Waxy red and white potatoes hold their shape at the lower end of each range.

These times start when the pot reaches full pressure, not when you press start. The pressurizing step adds another few minutes, so expect roughly 15 to 25 minutes from start to finish.

A 6-quart pot like the Instant Pot Duo heats its 1 to 2 cups of water to pressure in a short stretch, and the same water volume feeds steam to a full trivet load of potatoes without drowning them.

Does the size of the potato change the cooking time?

Yes, size matters more than variety. A 1-inch cube cooks in 5 to 7 minutes, while a 4-inch whole potato can need 15 minutes or more.

Cut potatoes into even pieces, about 1 inch across, for the most predictable results. Uneven pieces leave some bites mushy while others stay firm.

For whole potatoes, pick ones of similar size so they finish together. A large potato takes much longer than a small one in the same pot.

If you mix sizes, put the larger pieces on the bottom and the smaller ones on top. Even so, the biggest piece decides when the batch is done.

Should you steam potatoes or cook them in water?

Steam them above the water. Potatoes sitting in water can turn waterlogged and lose flavor, while steam cooks them evenly and keeps them firm.

Pour 1 to 2 cups of water into a 6-quart pot. Set the potatoes on a trivet or in a steamer basket so they sit above the liquid.

The 1-inch legs on a dedicated rack keep the food clear of the water, so the potatoes steam rather than boil.

The Sugaroom rack has 1-inch legs that hold food above the water and long handles so you can lift hot potatoes without burning yourself. It folds flat for storage.

Skip the rack if your pot's own steamer insert already fits and lifts out safely. Avoid overfilling the basket; leave space for steam to move around the potatoes.

A crowded basket traps steam in pockets and slows the cook on the pieces at the center.

Can you cook potatoes without a trivet?

Yes, in a pinch, but you lose the steam advantage. Without a rack, the potatoes rest on the pot bottom in the shallow water and the lower layer can turn watery while the top layer lags behind.

If you have no trivet, use a heatproof steamer basket that sits on the pot bottom and keeps food above the waterline. Fold a foil sling as a last resort and lift it by the ends once the pressure drops.

How do you cook potatoes in a pressure cooker step by step?

Prep, add water, load the trivet, lock the lid, set high pressure for the time in the table, then quick release. That order keeps the timing predictable.

1. Scrub or peel the potatoes and cut them to an even size.
2. Add 1 to 2 cups of water to the pot.
3. Place the potatoes on a trivet or in a steamer basket above the water.
4. Lock the lid and set the valve to sealing.
5. Cook on high pressure for the time in the table above.
6. Quick release the pressure, then open the lid away from your face.
7. Pierce the largest potato with a knife; it should slide in with little resistance.

If the knife meets firm resistance, lock the lid and cook for 1 to 2 more minutes. New to the appliance?

Our step-by-step guide on how to use a pressure cooker walks through the lid, valve and release basics. On a cooker with a one-touch steam program, you can set the time directly rather than choosing a preset and then adjusting it.

Why do potatoes come out undercooked or mushy?

Undercooking usually means the pieces were too large or the water ran short. Mushiness comes from too much time or a slow natural release that keeps cooking the potatoes after the timer ends.

Check that the pot actually reached pressure before you start counting. A weak seal or too little water can stop it from getting there.

Use a quick release for potatoes. A natural release lets the steam keep cooking them for several more minutes, which pushes firm potatoes toward mush.

A worn sealing ring is a common cause of pressure problems. The Presto 09936 ring forms a pressure-tight seal between the lid and body, and the pack includes an overpressure plug.

The ring sits in the groove around the inside rim of the cover, so work it in a small section at a time until it is fully seated.

Check your model number against the fit list before ordering. The ring fits a long list of Presto 4-quart and 6-quart models, so match your cooker's number first.

A ring that no longer seals lets steam escape and stretches cooking times.

How long do you cook potatoes for mashing or potato salad?

For mashing, cook cubed potatoes for 7 to 9 minutes until they break apart easily. For potato salad, aim for 5 to 6 minutes so the cubes hold their shape.

Mashing potatoes need to be soft enough to crush with a fork. Russets work well here because they turn fluffy and smooth.

Potato salad potatoes should stay firm. Waxy red and white varieties hold up best, and a quick release stops them from turning soft.

Cool salad potatoes in a colander under cold running water for a minute after release. This stops the cooking and keeps the cubes neat.

For mash, drain and mash while hot so the steam escapes and the texture stays light rather than gluey.

How does altitude affect potato cooking times?

Add about 5 percent more time for every 1,000 feet above sea level. Water boils at a lower temperature up high, so the pot needs longer to cook the same potato.

At 5,000 feet, add roughly 25 percent to the time in the table. A 6-minute cube becomes about 7 to 8 minutes.

Electric pressure cookers with altitude settings can adjust automatically. Otherwise, set the time yourself using the extra minutes.

Check doneness with a knife rather than trusting the timer alone. Altitude, potato age and starting temperature all shift the result a little.

Older potatoes that have lost moisture can also need a minute more, so taste or pierce before you commit the whole batch to a longer cook.

Which pressure cooker works well for potatoes?

A 6-quart electric cooker handles a family batch of cubed or whole potatoes with room to spare. The Instant Pot Duo 6 Qt offers pressure cook and steam functions plus an easy-release steam switch.

Its stainless steel inner pot has a tri-ply bottom, so you can sauté or sear in the same pot before cooking. That saves washing a second pan on busy nights.

The 7-in-1 design also covers rice, yogurt and keep warm, so the pot earns its counter space beyond potato night. The easy-release switch vents steam with a flip, which matters when you want a quick release and firm potatoes rather than a slow natural drop.

A stovetop cooker works too if you already own one. Whichever you use, the times above apply once the pot reaches high pressure.

Our guide to how a pressure cooker works explains why pressure shortens cooking so much.

If you're comparing models before buying, our roundup of the best pressure cookers covers the options worth a look.

What should you do after the potatoes are cooked?

Release the pressure quickly, check the largest potato with a knife, and serve or cool right away. Potatoes keep cooking in residual heat, so don't leave them in the sealed pot.

Drain steamed potatoes and season while hot so they absorb butter or oil. For salads, spread them on a tray to cool fast.

Store leftovers in a sealed container in the fridge within 2 hours. Reheat them gently so they don't dry out.

If you lifted the rack out by its handles, set it down on a heatproof surface before you handle the potatoes.

Once you have the potato timing down, try dried beans next. Our guide on how long to cook beans in a pressure cooker gives times for each common variety.

The bottom line on how long to cook potatoes in pressure cooker

For most meals, cook 1-inch potato cubes for 5 to 7 minutes and whole potatoes for 10 to 15 minutes at high pressure. Quick release as soon as the timer ends, then test the largest piece with a knife.

Pick the lower end for salad potatoes and the higher end for mashing. Adjust upward for large whole potatoes and for altitudes above sea level.

With those two rules, the timing stays reliable from batch to batch.

Frequently asked questions

Should potatoes be fully covered with water in a pressure cooker?

No. Potatoes should sit above the water, not in it.

Use 1 to 2 cups of water for a 6-quart cooker and steam the potatoes on a trivet or in a steamer basket so they cook evenly and keep their texture.

How do you stop potatoes from overcooking in a pressure cooker?

Use a quick release as soon as the timer ends. Turn the steam switch or valve to vent and stand back until the pressure drops fully.

Then open the lid and pierce the largest potato with a knife to check it.

Which potatoes cook fastest in a pressure cooker?

Waxy potatoes like red and white hold their shape and cook in about the same time as starchy russets when cut to the same size. Smaller pieces always cook faster, so cut every piece close to the same size.