You acquire a bag of russet potatoes two weeks in the past and most are nonetheless sitting within the pantry. One has sprouted. One other has a greenish patch on the pores and skin. A 3rd feels a bit tender. And someplace within the fridge is a container of leftover mashed potatoes from the weekend. What remains to be good?
Do potatoes go unhealthy?
The quick reply: Sure. Entire potatoes final 3 to five weeks in a cool darkish pantry, or as much as 2 to three months in a chilly cellar or basement. On a heat kitchen counter they final just one to 2 weeks. Lower uncooked potatoes must be used inside 24 hours. Cooked potatoes final 3 to 4 days refrigerated per the USDA FoodKeeper app. Inexperienced pores and skin and lengthy sprouts are the 2 indicators {that a} potato has produced solanine, a pure toxin that cooking doesn’t destroy.
For storage steerage on different produce and pantry staples, see our Meals Storage Information. In case you prepare dinner with onions and garlic alongside potatoes, see Do Onions Go Unhealthy? and Does Garlic Go Unhealthy?
Key Takeaways
- Entire potatoes in a cool darkish pantry (45 to 55°F): 3 to five weeks
- Entire potatoes in a chilly cellar or basement: 2 to three months
- Entire potatoes on a heat counter: 1 to 2 weeks solely
- Lower uncooked potatoes: submerge in chilly water, refrigerate, use inside 24 hours
- Cooked potatoes: 3 to 4 days hermetic within the fridge (USDA FoodKeeper)
- Freezer: uncooked potatoes don’t freeze effectively; cooked potatoes freeze for as much as 12 months
- Small agency sprouts: take away deeply and use if the potato is agency and never inexperienced
- Inexperienced pores and skin or flesh: solanine toxin. Small patch: reduce away a minimum of 1/4 inch. Giant inexperienced space: discard.
- Foil-wrapped baked potatoes: take away foil earlier than refrigerating. Foil creates botulism circumstances.
- Don’t wash potatoes earlier than storing. Moisture accelerates sprouting and decay.
How Lengthy Do Potatoes Final?
| Sort | Room Temp Counter (65 to 70°F) | Cool Pantry (50 to 60°F) | Cool Cellar (45 to 55°F) | Freezer |
|---|---|---|---|---|
| Entire uncooked potato | 1 to 2 weeks | 3 to five weeks | 2 to three months | Not really useful (uncooked) |
| Lower uncooked potato | No | No | 24 hours in chilly water (fridge) | Not really useful (uncooked) |
| Cooked potato (any preparation) | 2 hours max | No | 3 to 4 days hermetic | 10 to 12 months |
Temperature determines shelf life greater than location. A cool cellar, root cellar, or basement held at 45 to 55 levels Fahrenheit (7 to 13 levels Celsius) is the perfect setting and extends shelf life considerably. A typical kitchen pantry or cabinet runs hotter at 50 to 60 levels, which remains to be much better than a heat counter. The fridge will not be really useful for complete uncooked potatoes for high quality causes coated within the companion publish Do Potatoes Have to Be Refrigerated? Cooked potato figures per the USDA FoodKeeper app.
The Finest Place to Retailer Potatoes
Potatoes are a cool-climate root crop that advanced underground. They want three issues: darkness, cool temperatures, and airflow. A pantry, cabinet, or basement that stays between 45 and 55 levels Fahrenheit is the perfect location. A wire basket, paper bag, or cardboard field gives the airflow they want. Plastic luggage entice moisture and shouldn’t be used for potato storage.
Don’t wash potatoes earlier than storing them. Moisture on the pores and skin accelerates mould progress and sprouting. Wash them solely when you’re able to prepare dinner.
Hold potatoes away from onions in storage. Onion gases could cause potatoes to sprout quicker, and the 2 don’t make good pantry neighbors regardless of being frequent cooking companions. Hold them on separate cabinets or in separate areas of the kitchen.
Hold potatoes away from mild. Mild is what triggers the manufacturing of chlorophyll and solanine within the potato pores and skin. A bag of potatoes left on a sunny counter can start greening inside days.
Sprouted Potatoes: When They Are Protected and When They Are Not
A sprout on a potato will not be routinely a discard sign. Whether or not a sprouted potato is secure relies on how far the sprouting has progressed and whether or not there’s any inexperienced discoloration.
Small, agency sprouts with no inexperienced discoloration: The potato is probably going nonetheless suitable for eating if the flesh remains to be agency. Lower the sprouts out deeply, eradicating a beneficiant quantity of the encompassing flesh and any seen eyes. Don’t simply snap off the floor progress. The toxin focus is highest in and instantly across the sprout. Peel the potato completely, particularly across the eyes. Michigan State College Extension recommends trimming away any small sprouts earlier than cooking.
Lengthy sprouts, tender or shriveled flesh, or any inexperienced discoloration: Discard the potato. Lengthy sprouts point out the toxin solanine has been produced in increased concentrations all through the potato. A tender or shriveled texture means the potato has misplaced an excessive amount of moisture and dietary high quality to be value consuming. Inexperienced pores and skin alongside sprouts is a definitive discard sign.
Inexperienced Potatoes: A Real Meals Security Challenge
The inexperienced shade on a potato pores and skin is attributable to chlorophyll, which isn’t poisonous. However chlorophyll is a dependable marker that solanine and chaconine, two glycoalkaloid toxins, have additionally gathered within the flesh. These toxins are produced when potatoes are uncovered to mild or broken. Solanine and chaconine could cause nausea, vomiting, abdomen cramps, complications, and in giant portions, extra severe neurological signs. The essential level confirmed by Poison.org and Michigan State College Extension: cooking doesn’t destroy solanine. Baking, boiling, and frying don’t neutralize it. If a potato has a small inexperienced patch, reduce it away deeply, a minimum of 1/4 inch beneath the floor, and prepare dinner the remaining. If a potato has intensive greening, discard it fully. A bitter style after peeling is a warning signal that solanine is current within the flesh.
Tips on how to Inform If a Potato Has Gone Unhealthy
Indicators a Potato Has Gone Unhealthy
- Smooth or mushy texture: Contemporary potatoes are agency all through. A potato that offers when pressed has misplaced moisture and begun to interrupt down. Discard.
- Intensive inexperienced pores and skin or flesh: Solanine accumulation from mild publicity. Small patch: reduce away deeply. Giant space: discard.
- Lengthy or intensive sprouts: Discard the entire potato. Small agency sprouts with no greening might be reduce out deeply.
- Liquid on the backside of the bag: Bacterial tender rot. Discard the whole bag. The an infection spreads from potato to potato and any others within the bag are seemingly affected even when they don’t present seen indicators but.
- Foul or musty odor: Contemporary potatoes have a gentle earthy odor. A rotten, bitter, or chemical odor means discard.
- Mould: Any seen fuzzy progress means discard the potato. Don’t reduce round it.
- Shriveled or hole pores and skin: A potato that has dried out to a papery shell with no agency flesh inside has deteriorated previous use.
Storage Finest Practices
- Retailer in a cool, darkish, well-ventilated place in a paper bag, wire basket, or cardboard field
- Don’t use plastic luggage; they entice moisture and speed up sprouting
- Don’t wash earlier than storing; wash solely when able to prepare dinner
- Avoid mild sources, together with kitchen home windows and under-counter lighting
- Avoid onions; retailer on separate cabinets
- Take away foil from baked potatoes earlier than refrigerating
- Label cooked potato containers with the date
Foil-Wrapped Baked Potatoes: Take away the Foil Earlier than Refrigerating
This is without doubt one of the most missed meals security factors for potatoes. A baked potato left in aluminum foil creates a heat, low-oxygen setting after cooking that may help the expansion of Clostridium botulinum, the bacterium chargeable for botulism. Michigan State College Extension and the USDA each flag foil-wrapped baked potatoes as a meals security concern. The repair is easy: take away the foil earlier than storing the potato within the fridge. Retailer it in an hermetic container or wrap it loosely in plastic wrap as an alternative. Refrigerate inside two hours of cooking.
See additionally
Lower Uncooked Potatoes: The 24-Hour Rule
As soon as a potato is reduce, it begins oxidizing quickly on the reduce floor and turning brown. The browning is enzymatic oxidation and never a meals security difficulty by itself, however reduce potatoes additionally start shedding moisture and texture rapidly. The usual strategy is to submerge reduce uncooked potatoes in chilly water instantly after reducing. The water prevents oxidation and retains the feel agency. Refrigerate the water-covered bowl and use the potatoes inside 24 hours.
Can You Freeze Potatoes?
Uncooked potatoes don’t freeze effectively. The excessive water content material causes ice crystals to kind that rupture the cell partitions, leaving a grainy, waterlogged texture after thawing. Don’t freeze uncooked complete or reduce potatoes.
Cooked potatoes freeze very effectively. Mashed potatoes, roasted potatoes, and blanched potato wedges or fries all freeze for as much as 10 to 12 months with good outcomes. For mashed potatoes, unfold on a baking sheet to freeze first, then switch to a freezer bag. For roasted potatoes or fries, blanch briefly earlier than freezing for the very best texture after reheating. Thaw cooked potatoes within the fridge in a single day and reheat completely earlier than serving.
Additional Studying
Do Potatoes Go Unhealthy FAQ
Is it suitable for eating a potato that has sprouted?
It relies on the extent of the sprouting and whether or not the potato has any inexperienced discoloration. A potato with one or two small, agency sprouts and no inexperienced pores and skin might be eaten after reducing the sprouts out deeply together with the encompassing eyes. If the potato has lengthy sprouts, is tender or shriveled, or reveals any inexperienced on the pores and skin or flesh, discard it. Registered dietitian Naria Le Mire, MPH, RD, confirms that greening is extra regarding than sprouting and {that a} agency, non-green potato with small sprouts eliminated is mostly suitable for eating.
Can inexperienced potatoes make you sick?
Sure. Inexperienced potatoes comprise elevated ranges of solanine and chaconine, glycoalkaloid toxins that trigger nausea, vomiting, abdomen cramps, and complications. In bigger portions they’ll trigger extra severe signs. Critically, these toxins are heat-stable: baking, boiling, and frying don’t destroy them. A small inexperienced patch might be reduce away deeply and the remainder of the potato used. A potato with intensive greening ought to be discarded. A bitter style after peeling is an indication that solanine has penetrated the flesh.
How lengthy do cooked potatoes final within the fridge?
Cooked potatoes in any kind, baked, mashed, roasted, or boiled, final 3 to 4 days in an hermetic container within the fridge per the USDA FoodKeeper app. The bottom line is cooling them inside two hours of cooking and storing them hermetic. Foil-wrapped baked potatoes ought to have the foil eliminated earlier than refrigerating to eradicate the low-oxygen setting that may help bacterial progress.
Why do my potatoes at all times sprout so quick?
The 2 commonest causes are heat and light. Potatoes sprout quicker at room temperature than in a cool pantry, and light-weight publicity dramatically accelerates the method. In case your potatoes are saved on a counter close to a window, in a bowl beneath kitchen lighting, or in a heat spot close to the range, they may sprout inside days. Transfer them to the good, darkest spot in your kitchen or pantry, retailer them in a paper bag or basket that blocks mild, and hold them away from onions. Shopping for smaller portions extra ceaselessly is essentially the most sensible answer in case your storage circumstances are usually not excellent.
Do candy potatoes go unhealthy the identical means common potatoes do?
Comparable ideas however completely different specifics. Candy potatoes final about 1 to 2 weeks on a room-temperature counter and three to five weeks in a cool pantry. They like barely hotter storage than common potatoes, round 55 to 60 levels Fahrenheit, and shouldn’t be refrigerated uncooked for a similar high quality causes. Crucially, candy potatoes don’t produce solanine when uncovered to mild, so greening will not be the meals security concern it’s with common potatoes. Spoilage indicators are comparable: tender spots, seen mould, foul odor, and shriveled pores and skin imply discard. Cooked candy potatoes final 3 to five days refrigerated in an hermetic container.
Do several types of potatoes final the identical period of time?
Not precisely. Russet potatoes have thick, dry pores and skin that holds up effectively in long-term storage and are typically the very best keepers amongst frequent varieties. Yukon Gold, crimson, and new potatoes have thinner skins and better moisture content material, which makes them extra vulnerable to bruising and mould. They sometimes final every week or two lower than russets beneath the identical circumstances. Fingerling and child potatoes are equally shorter-lived. Purchase thinner-skinned varieties in smaller portions and plan to make use of them quicker than you’d a bag of russets.
Discard the whole bag. Liquid on the backside of a potato storage bag is an indication of bacterial tender rot, a fast-moving an infection that spreads from potato to potato by way of contact. Even potatoes within the bag that seem agency and undamaged have seemingly been uncovered to the micro organism. The an infection will not be at all times seen from the surface. When one potato liquefies in a bag, the secure assumption is that the remaining are compromised.
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