March 3, 2024
Learn how to identify bad potatoes, safely store and preserve them, and avoid the risks associated with consuming spoiled spuds.


Are your potatoes starting to look a little strange? Maybe they’re starting to sprout or have a funky odor. With so many potato varieties and different ways to prepare them, it’s important to know when your spuds have gone bad. Not only can spoilt potatoes impact the flavor of your recipes, but they can also pose health risks if consumed. In this article, we’ll explore the different signs of bad potatoes, how to properly store your potatoes, how to check for potato spoilage, and tips for avoiding the risks of eating bad spuds.

5 Signs Your Potatoes Have Gone Bad: How to Avoid Spoiled Spuds

One of the first ways to tell if your potatoes have gone bad is by the mold or decay on the surface. When a potato is covered in mold, it’s best to discard it. And when a potato’s surface is discolored or has deep wrinkles, this is also a warning sign of decay.

If the potatoes feel soft or spongy to the touch, they might be spoiling on the inside. If your potato has any black spots or other unnatural discolorations, there’s a good chance the potatoes have spoiled and should be tossed.

Another sign is if your potatoes are starting to sprout or form “eyes” on their surface. While small eyes and sprouts are usually not an issue, the more mature the sprouts become, the more likely the potato has started to rot.

Finally, if you notice a sliminess on the potato surface or it has a foul odor, it’s generally safe to assume that they have gone bad and should be discarded.

The Do’s and Don’ts of Potato Storage: Keeping Your Spuds Fresh and Delicious

If you want to keep your potatoes fresh, it’s important to store them properly. Here are some tips for storing potatoes to keep them as fresh as possible:

First, store your potatoes in a cool, dry, and dark place. Potatoes should be kept at a temperature between 45-50°F (7-10°C) to keep them from sprouting and going bad. Avoid storing potatoes in direct sunlight or high temperatures, which will accelerate spoilage.

Another important factor is avoiding exposure to light and moisture. Bright light can encourage potato sprouting, so it’s best to store them in a paper or mesh bag to allow for some ventilation. Keeping your potatoes dry is also critical, as excess moisture can lead to decay and mold growth.

When it comes to storage, it’s best to avoid bruising and damage. Potatoes bruise easily, which can lead to rotting or spoilage. To keep your potatoes from getting banged up, store them in a single layer in a bin or basket, or wrap them in newspaper or paper towels before storing in a bag or container.

Finally, it’s important to know how long do potatoes last in storage. Generally, potatoes can last up to two weeks in dark and humid-free conditions. But if you want them to last even longer, you could try storing them in the refrigerator. Cold temperatures can keep them from spoiling for up to five weeks.

How to Check for Spoiled Potatoes: A Simple Guide

If you have a suspicion that your potatoes might be spoiling, it’s important to check them thoroughly before cooking. Here are some helpful inspection techniques:

For visual inspections, check for signs of discoloration, mold growth, or wrinkles. If there are any visible signs of decay, discard the potato. You can also give them a quick physical inspection, feeling for any variations in texture or soft spots.

Another method is using your sense of smell and taste. If you notice an off-putting, strong, or sour smell or taste, this is a sign that your potato has gone bad. Garden potatoes, for instance, have a distinct taste that is quite bitter, indicating if the potato is poisonous or not.

Finally, it’s important to know the difference between healthy and diseased sprouts. Healthy sprouts are usually small and light-colored, whereas diseased sprouts tend to be dark in color or black and may have a mushy texture. If your potato’s sprouts look diseased, it’s best to avoid consuming the potato.

Potato Safety Tips: Avoiding the Risks of Eating Bad Spuds

Consuming bad potatoes can be unsafe and result in food poisoning. Potatoes are known to harbor harmful bacteria such as E.coli and Listeria. So it’s essential to take potato safety seriously.

Before handling potatoes, ensure that your hands are clean and washed thoroughly, and that you’re using clean and sanitized utensils. Also, be sure to wash the potatoes well with cold water before using them.

Finally, it’s important to cook your potatoes properly. When you’re cooking potatoes, ensure that they’re cooked to a safe internal temperature. The safest temperature for cooking potatoes is 210°F (99°C). At this temperature, the potatoes are thoroughly cooked, and bacteria isn’t able to survive.

Common Causes of Potato Spoilage: Understanding the Science Behind Bad Spuds

The primary drivers behind potato spoilage are moisture and pathogens. Moisture can be caused by high humidity, condensation, or improper storage. When moisture occurs around the potato, it encourages the growth of pathogens, such as molds and bacteria.

Another common cause of potato spoilage is improper handling. Potatoes bruise easily and can quickly go bad when they’re damaged. It’s important to handle them gently and store them in proper storage conditions, and remove any damaged or bruised potatoes promptly.

Finally, potato spoilage can be caused by exposure to light. Light causes potatoes to produce solanine, a poisonous compound that can be harmful to humans in high doses. It’s important to store potatoes away from light to keep them from developing this compound.

Potato Preservation Methods: Keeping Your Spuds Fresh for Longer

There are several methods you can use to keep your potatoes fresh for longer. Here are a few:

One preservation method is blanching potatoes, which helps prevent discoloration. Blanching involves parboiling potatoes for a few minutes, then plunging them into cold water to prevent overcooking.

Dehydrating overripe potatoes is another method that works well. Dehydrating potatoes removes moisture, which discourages mold growth and extends the shelf life.

A popular preservation method is freezing potatoes. To freeze potatoes, simply blanch them first before freezing in an airtight container or bag. This method can last up to 8 months.

Another preservation method is canning potatoes. This method involves boiling peeled potatoes for about ten minutes before sealing them in jars with canning lids.


Now that you know how to tell if your potatoes are bad and how to keep them fresh, it’s essential to put these tips into action. Whether you’re looking for a side dish or a main course, potatoes are delicious and versatile. Now, with the knowledge of potato storage and preservation, you can safely enjoy your spuds without worrying about potential health risks from bad potatoes.

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