As long as the potatoes are still mostly firm, they're fine to cook. Potatoes are 80 percent water, so softness is usually just a sign of dehydration. But if they're extremely mushy or shriveled, do not pass go.
Boiled Potatoes Time Guide
Peeled, cubed potatoes cut into small, one-inch pieces should cook in 10 to 12 minutes, once the water reaches a boil. Larger pieces (about 2 inches across) may need longer, around 15 minutes. Medium whole potatoes should boil 20 minutes before they'll be tender.
How long can peeled and cut potatoes sit in water before cooking, before they begin taking on too much water? A: We usually recommend no more than 24 hours. You can keep the potatoes from absorbing the water by making sure the water is not salted, and is chilled (you can even add ice to the water).
Check for soft spots, dark spots, sprouts, or green color. If the potato has little sprouts remove them, then prep potato for your dish. If there is a little green cut that off. If the potato has long spouts, is soft, wrinkled, or has lots of dark spots get rid of it.
Consuming bad potatoes can cause solanine poisoning. Symptoms include headaches, vomiting, fever, stomach cramps, and difficulty in breathing. Other symptoms include diarrhea, shock, and hallucinations. An article from New York Times provides more information on potato plant poisoning.
If you're prepping with smaller pieces, don't soak for more than 12 hours. This trick is handy, but it'll only work for about 24 hours — so don't prep too far in advance. After too long they'll start to take on water and may lose their structure when you go to cook them.
Peeled potatoes left out by themselves at room temperature, on a refrigerator shelf or wrapped in foil or plastic wrap will still get dark overnight, so submerge them in a bowl of water, cover and refrigerate. Cubed peeled potatoes can sit in water overnight, but they need to be refrigerated.
Soaking potatoes in water helps remove excess starch. Excess starch can inhibit the potatoes from cooking evenly as well as creating a gummy or sticky texture on the outside of your potatoes. Cold water is used because hot water would react with the starch activating it, making it harder to separate from the potatoes.
Are Shriveled Potatoes Safe To Eat? No, shriveled or wrinkled potatoes should not be eaten. "Potatoes that have started to shrivel, wrinkle or soften and develop long sprouts are not safe to eat," says Michael Handal, chef-instructor of Culinary Arts at the Institute of Culinary Education (ICE).
The long and short of it is that—yes! —sprouted potatoes are usually safe to eat. But you are going to want to trim those tiny growths before you cook the spuds. Keep reading to find out how to safely cook sprouted potatoes.
The lid helps trap the steam inside, which means you are cooking with water. Water boils much faster than air, so keeping the lid on your pot of potatoes makes it more likely for them to cook through in a shorter amount of time.
This process, which is called oxidation, happens because potatoes are a naturally starchy vegetable. And when exposed to oxygen, starches turn gray, brown, or even black. An oxidized potato is completely safe to eat. The process doesn't affect the flavor or texture of the vegetable.
Do cooked potatoes go brown? No. Once the starch is cooked, the potato won't go brown even if it is exposed to air for a while. If you have lots of potatoes that need to be used up, the best option is to peel and cube them, then cook them and freeze them in portions.
Placing spuds in water will slow the oxidation process, but it will not stop it. To keep keep potatoes from turning brown for more than six hours, say overnight, then add a bit of acid. Lowering the pH of the potato helps fight off oxidation.
Don't fry fresh-cut potatoes
Soaking peeled, washed, and cut fries in cold water overnight removes excess potato starch, which prevents fries from sticking together and helps achieve maximum crispness.
Why use salt water for soaking potatoes? There's moisture naturally found in potatoes, and moisture is drawn to higher concentrations of salt. (This is a process called osmosis.) So, if you put the potatoes in a salt water bath, that will help draw out some of their moisture, resulting in crispier fries.
Additionally, the potatoes will lose some of their flavor and texture, as the starchy compounds that give potatoes their texture and flavor are broken down when left in water for too long.
Potato water can be refrigerated for up to 24 hours. After this time, the potato water sweetens and can spoil the taste of your bread. You can keep it longer by freezing it. There is no need to waste the cooked potatoes.
Allow the water to rest for about 30 minutes so the starch settles. Pour the water out of the bowl, leaving the starch at the bottom of the bowl. Combine the starch and potatoes just before cooking.
Early symptoms include body weakness and dizziness followed by double vision, difficulty in swallowing and slurred speech. Breathing difficulties, weakness of other muscles, and constipation are also common symptoms.
If a potato is entirely green, you should toss it; otherwise just trim and proceed. The green parts taste bitter, so if your tater tastes bitter, don't eat it.
If you find or buy green potatoes, throw them out. While removing the green and cooking them removes some of the solanine, it may not be enough to prevent illness. Also avoid eating potatoes that are past their prime, have eyes growing on them, or show any signs of decay.