If you want to learn how to can potatoes for long-term storage, this easy guide will walk you through each step safely. Pressure canning potatoes at home is a smart way to save time, reduce waste, and keep your pantry stocked with ready-to-use food.
Potatoes are one of the most comforting and versatile foods in any kitchen. Whether mashed, roasted, or added to soups and stews, they are a staple ingredient in many American homes. But what happens when you have a large harvest or find a great deal on potatoes at the store? Instead of letting them spoil, you can preserve them safely for months using pressure canning.
Learning how to can potatoes for long-term storage is a practical and rewarding skill. Properly canned potatoes can last up to a year or even longer when stored correctly. They are ready to use in quick meals, making weeknight cooking easier and reducing food waste.
In this complete guide, you’ll learn the safe method for pressure canning potatoes, the equipment you need, step-by-step instructions, and helpful tips that ensure your jars stay fresh and safe for long-term storage.
Table of Contents
Why Learn How to Can Potatoes for Long-Term Storage
Many home cooks want to know how to can potatoes for long-term storage because it makes meal prep faster and more convenient. Once you understand the process, you can preserve potatoes safely and keep them ready for soups, stews, and skillet meals.
Canning potatoes offers several advantages for home cooks and food preservers. First, it saves time during busy days. When potatoes are already peeled and cooked in jars, you can quickly add them to soups, stews, or casseroles without extra preparation.
Another benefit is reducing food waste. Potatoes can sprout or spoil if left too long in storage. By canning them, you preserve their flavor and texture while extending their shelf life.
Many people also enjoy canning potatoes for emergency preparedness. Having shelf-stable food available provides peace of mind during storms, power outages, or unexpected situations.
Finally, home-canned potatoes are free from preservatives and unnecessary additives. You control exactly what goes into each jar, making it a healthier and more natural option.
Important Safety Note About Canning Potatoes
Potatoes are considered a low-acid food, which means they must always be processed in a pressure canner. Water bath canning is not safe for potatoes because it cannot reach the high temperatures needed to destroy harmful bacteria.
Pressure canning allows the jars to reach temperatures above boiling, which eliminates dangerous microorganisms such as those responsible for botulism. Following proper safety guidelines ensures your canned potatoes remain safe to eat.
Never skip the pressure canning step and always follow recommended processing times.
Equipment You Will Need
Before starting, gather all the necessary canning tools. Having everything prepared makes the process smooth and enjoyable.
Essential equipment includes:
• Pressure canner
• Canning jars (pint or quart size)
• New canning lids and bands
• Jar lifter
• Canning funnel
• Large pot for boiling potatoes
• Clean kitchen towels
• Sharp knife and vegetable peeler
Using proper equipment ensures the jars seal correctly and the food remains safe for long-term storage.
Ingredients
The ingredient list is simple and affordable.
• Fresh potatoes (about 20 pounds for 7 quart jars)
• Clean water
• Canning salt (optional)
Canning salt helps enhance flavor and maintain the color of the potatoes, but it is not required for safety.
Choosing the Best Potatoes for Canning
Not all potatoes behave the same when canned. Some varieties hold their shape better and produce a more appealing texture.
The best potatoes for canning include:
• Yukon Gold
• White potatoes
• Red potatoes
These varieties remain firm during pressure canning and are less likely to become mushy.
Avoid extremely starchy potatoes such as Russets. While they can still be canned, they sometimes break apart and produce cloudy liquid in the jar.
Always select fresh, firm potatoes without green spots, sprouts, or bruising.
Preparing Potatoes for Canning
Proper preparation is important for both safety and quality.
- Wash the potatoes thoroughly to remove dirt.
- Peel the potatoes using a vegetable peeler.
- Cut them into cubes about 1 to 2 inches in size.
- Place the cut potatoes into a bowl of cold water to prevent browning.
Keeping potatoes submerged in water helps maintain their natural color until you are ready to cook them.
Pre-Cooking the Potatoes
Potatoes must be partially cooked before canning. This step improves texture and helps remove excess starch.
- Bring a large pot of water to a boil.
- Add the cubed potatoes.
- Boil for about 2 minutes.
- Drain the potatoes but keep them warm.
This quick blanching step prepares them for safe packing into jars.
Packing the Jars
Once the potatoes are pre-cooked, it is time to fill the jars.
- Place the warm potatoes into clean canning jars.
- Leave about 1 inch of headspace at the top.
- Add ½ teaspoon of canning salt per pint jar if desired.
- Pour boiling water over the potatoes while maintaining the 1-inch headspace.
Use a clean utensil to remove air bubbles by gently sliding it along the inside of the jar.
Wipe the rim with a clean damp cloth, then place the lid and screw the band until fingertip tight.
You can learn our complete guideline How to Sterilize Canning Jars Properly (Complete Safety Guide)
Step-by-Step Guide: How to Can Potatoes for Long-Term Storage
Before you begin, make sure you understand how to can potatoes for long-term storage using only a pressure canner, since potatoes are a low-acid food.
Place the filled jars inside the pressure canner with the recommended amount of water.
Follow these processing guidelines:
Pint jars:
Process for 35 minutes
Quart jars:
Process for 40 minutes
Pressure level:
• 10 pounds of pressure (dial gauge canner)
• 11 pounds for some models depending on altitude
Always adjust pressure if you live at higher elevations.
Allow the pressure canner to reach the correct pressure before starting the processing timer.
If you’re new to pressure canning, check our detailed Beginner’s Guide to Pressure Canning Safety for extra confidence.
Cooling and Checking the Seals
After the processing time is complete, turn off the heat and allow the pressure canner to cool naturally.
Do not force the cooling process.
Once the pressure returns to zero:
- Carefully remove the jars using a jar lifter.
- Place them on a towel-lined counter.
- Allow the jars to cool undisturbed for 12 to 24 hours.
When the jars are fully cooled, check the lids. A properly sealed lid will not flex when pressed in the center.
If any jar did not seal, store it in the refrigerator and use within a few days.
you can learn our complete guideline How to Sterilize Canning Jars Properly (Complete Safety Guide)
How to Can Potatoes for Long-Term Storage Safely
For the best results, store your jars in a cool, dark location such as a pantry or basement shelf.
Ideal storage conditions include:
• Temperature between 50°F and 70°F
• Low humidity
• No direct sunlight
Under proper storage conditions, canned potatoes maintain their best quality for about 12 months.
Always label jars with the date so you can use the oldest ones first.
One of the biggest benefits of learning how to can potatoes for long-term storage is having shelf-stable food available for busy days and emergency use.
How to Use Home-Canned Potatoes
One of the greatest advantages of canned potatoes is convenience. They are already cooked and ready to use.
You can add them directly to many dishes, including:
• Soups and stews
• Breakfast hash
• Potato salad
• Chicken pot pie
• Beef stew
• Quick skillet meals
Simply drain the liquid and incorporate them into your favorite recipes.
Troubleshooting Common Problems
Even experienced home canners sometimes encounter small issues. Here are a few common concerns and how to prevent them.
Cloudy Liquid
Cloudiness usually occurs because of excess starch. Rinsing potatoes thoroughly and blanching them before canning helps reduce this issue.
Floating Potatoes
Some floating is normal. Packing jars properly and removing air bubbles minimizes this effect.
Soft Texture
Using the right potato varieties helps maintain a firm texture.
Helpful Tips for Successful Potato Canning
• Always use fresh potatoes.
• Avoid overcooking during blanching.
• Maintain proper headspace in each jar.
• Use tested pressure canning guidelines.
• Store jars away from direct sunlight.
Following these tips will improve the quality and longevity of your canned potatoes.
Frequently Asked Questions
Can potatoes be canned without a pressure canner?
No. Because potatoes are a low-acid food, they must always be pressure canned to ensure safety.
How long do canned potatoes last?
When stored properly in a cool and dark place, canned potatoes usually maintain good quality for about one year.
Do canned potatoes need to be cooked again?
They are already cooked during the canning process, so they only need to be reheated before serving.
Can I can potatoes with other vegetables?
It is best to can potatoes separately unless you are following a tested mixed-vegetable recipe.
Final Thoughts
Learning how to can potatoes for long-term storage is a valuable skill that combines tradition, practicality, and food security. With the proper equipment and safe pressure canning techniques, you can transform simple potatoes into convenient pantry staples.
Home-canned potatoes save time in the kitchen, reduce food waste, and provide ready-to-use ingredients for countless meals. Whether you enjoy preserving food from your garden or preparing for busy days ahead, this method ensures you always have nourishing food available.
Once you master this process, you may discover that canning potatoes becomes one of the most useful and satisfying preservation projects in your kitchen.
Now that you know how to can potatoes for long-term storage, you can confidently preserve this pantry staple at home. It is a practical, money-saving method that helps you enjoy ready-to-use potatoes all year long.
For additional food safety guidance, check the USDA-backed home food preservation resource below:
National Center for Home Food Preservation