Those little sprouts might seem harmless, but they can be a warning sign. Learn when sprouted potatoes may still be usable, when to throw them away, and how to store potatoes safely.
Reading Time: 5 minutes
Category: Food Safety & Kitchen Tips
Difficulty: Beginner-Friendly
Best For: Home Cooks, Food Storage & Kitchen Safety
Introduction
Can you eat sprouted potatoes safely and when sprouted potatoes should be discarded? It's a common kitchen question, especially when you discover potatoes growing small white or purple shoots in your pantry. You might wonder whether removing the sprouts makes them safe or whether the entire potato belongs in the trash. The answer depends on the potato's condition, including the size of the sprouts, whether the skin has turned green, and whether the potato is still firm. Sprouting can be associated with increased levels of naturally occurring toxins, so knowing the warning signs is important before preparing your next batch of mashed potatoes or crispy roasted wedges.
Why Do Potatoes Start Sprouting?
Potatoes are living tubers that naturally begin growing shoots when storage conditions encourage germination.
Warm temperatures, exposure to light, and extended storage can contribute to sprouting. These shoots emerge from small indentations called eyes.
Although sprouting is a natural process, it can also signal changes in the potato's chemical composition.
Are Sprouted Potatoes Dangerous?
Potatoes naturally contain compounds called glycoalkaloids, primarily alpha-solanine and alpha-chaconine.
These substances help protect the plant against pests and environmental threats.
However, consuming excessive amounts can cause poisoning, with symptoms including nausea, vomiting, abdominal pain, and diarrhea. More serious effects are possible after substantial exposure.
Glycoalkaloids are particularly concentrated in potato sprouts, eyes, and green or damaged areas.
That's why eating the sprouts themselves is not recommended.
Can You Eat Potatoes with Small Sprouts?
A potato with a few tiny sprouts is not necessarily as concerning as one covered in long shoots, but appearance alone cannot establish that it is safe.
Some food-safety guidance permits using a firm, otherwise healthy potato after completely removing small sprouts, their surrounding eyes, and any green areas.
Other authorities recommend discarding sprouted potatoes because toxin levels cannot be reliably determined at home.
The safest choice is to discard sprouted potatoes, particularly if they have multiple sprouts, green patches, or signs of deterioration.
5 Warning Signs You Should Throw Away a Potato
1. Long or Numerous Sprouts
Potatoes with extensive sprouting should be discarded. Removing visible shoots does not guarantee that elevated glycoalkaloid levels have been eliminated.
2. Green Skin or Green Flesh
Green coloring develops when potatoes are exposed to light and produce chlorophyll.
Chlorophyll itself is harmless, but greening can occur alongside increased glycoalkaloid production.
Discard potatoes with extensive green areas rather than attempting to salvage them.
3. Soft, Wrinkled, or Shriveled Texture
A potato that has become very soft or shriveled has deteriorated in quality. When this occurs alongside sprouting, discarding it is the sensible option.
4. Bitter Taste or Burning Sensation
High glycoalkaloid concentrations may cause bitterness or an unpleasant burning sensation in the mouth.
Never deliberately taste a questionable potato to test its safety. If a cooked potato tastes unusually bitter or causes irritation, stop eating it.
5. Mold, Rot, or Unpleasant Odors
Visible mold, leaking liquid, rotten patches, or a foul smell are clear reasons to discard potatoes.
Does Cooking Destroy Potato Toxins?
Unfortunately, ordinary cooking methods do not reliably eliminate potato glycoalkaloids.
Boiling, baking, roasting, and frying may reduce some glycoalkaloid content under certain conditions, but none should be relied upon to make a heavily sprouted or green potato safe.
Cooking also cannot reverse spoilage or remove all potentially harmful compounds.
How to Store Potatoes to Prevent Sprouting
Proper storage can help potatoes remain firm and usable for longer.
- Keep them cool: Choose a cool, stable storage location rather than a warm countertop.
- Avoid sunlight: Store potatoes in darkness to reduce greening.
- Provide ventilation: Use a breathable basket, paper bag, or ventilated container.
- Avoid excess moisture: Keep potatoes dry until you're ready to wash and cook them.
- Check regularly: Remove spoiled potatoes to prevent deterioration from affecting the rest.
For long-term storage, temperatures around 45–50°F (7–10°C) are often recommended. Avoid freezing raw whole potatoes.
What Should You Do If You Accidentally Eat Sprouted Potatoes?
If you accidentally consume sprouts or questionable potatoes, don't assume that symptoms will necessarily occur.
However, if you develop vomiting, significant abdominal pain, diarrhea, dizziness, or other concerning symptoms, contact a poison control center or healthcare professional promptly.
Seek urgent medical care for severe symptoms. Children may be especially vulnerable because of their smaller body weight.
Frequently Asked Questions
1. Can I simply cut the sprouts off a potato?
Some guidance allows small sprouts to be removed from an otherwise firm, healthy potato, but other food-safety authorities advise discarding sprouted potatoes. Removing sprouts does not guarantee safety, especially when greening or extensive sprouting is present.
2. Are green potatoes safe after peeling?
Peeling may reduce some glycoalkaloids, but it does not guarantee their complete removal. Discard potatoes with extensive greening.
3. Can you eat potatoes that have started growing roots?
What appear to be roots are often sprouts emerging from the potato's eyes. Because these areas may contain concentrated glycoalkaloids, avoid eating the shoots and discard heavily sprouted potatoes.
4. Does boiling make sprouted potatoes safe?
No. Boiling does not reliably eliminate glycoalkaloids, so it should not be used as a method to make questionable potatoes safe.
5. How can I stop potatoes from sprouting so quickly?
Store them in a cool, dark, dry, well-ventilated location. Avoid warm temperatures and direct sunlight, and inspect your potatoes regularly.
Final Thoughts
So, can you eat potatoes that have sprouted? While some guidance considers minimally sprouted, firm potatoes usable after careful trimming, the safest approach is to discard sprouted potatoes when their condition is uncertain.
Never eat the sprouts themselves, and avoid potatoes with extensive greening, long shoots, or signs of spoilage.
With proper storage and regular checks, you can reduce sprouting, waste fewer potatoes, and prepare your favorite potato dishes with greater confidence.