How Long Do Potatoes Last?
Potato’s are one of the most common vegetables in our diet. They have been eaten since ancient times and they still remain popular today. However, there are many types of potatoes available and each type has its own characteristics which make them different from each other. Some varieties such as Yukon Golds or Russets grow well in temperate climates while others like Red Raspberries will not survive cold winters at all!
The potato plant grows up to six feet tall and produces two main parts: the tuberous root (called the tuber) and the edible fleshy part called the endosperm. The endosperm contains starch, vitamins A, C, E & K2 and other nutrients.
When cooking potatoes they lose some of their nutritional value but when stored properly they retain much of it.
So what does this mean?
Well, if you keep your potatoes in the refrigerator they will last longer than if they were left out in the sun. If you store them in a dark place, then they should last between three months and four years before needing to be used again.
So how long do potatoes really last?
Let us take a look at some facts about potatoes…
1. Uncooked potatoes
If you have potatoes in your pantry and you want to find out how long do potatoes last before they go bad, then the best way to do it is keep one in a cool dry place and then check on it every few weeks. When the surface of the potato becomes covered with patches of dark grey or green color, it is time to get rid of it.
2. Cooked potatoes
Cooked potatoes will last one day in the refrigerator. If you store them in the freezer, they can last up to four months.
3. New potatoes
New potatoes are smaller, less starchy and more flavorful than other potatoes. They are also more nutritious.
If you keep new potatoes in a paper bag in the fridge, they will last about a week before going bad. If stored in the pantry, they will last about two weeks.
4. Sweet potatoes
Sweet potatoes have many of the same beneficial properties as ordinary potatoes. They contain about four times the amount of vitamin A and three times as much iron.
If you keep sweet potatoes in the refrigerator, they will last up to a week before going bad. In the pantry, they will keep fresh for two weeks.
5. Uncooked whole potatoes
Uncooked potatoes will last longer than any other part of the potato plant, such as the leaves or stems. Uncooked potatoes stored in a cool, dark place will last up to four months.
6. Cooked whole potatoes
Whole cooked potatoes will only last one or two days in the refrigerator. If you want to keep them longer than this, then you should freeze them (providing they are already cooked of course).
Frozen whole potatoes will only last three to four months in the freezer.
If you really want to keep your potatoes fresh for as long as possible then it is best to keep the skin on. This will prevent them from going bad as quickly as they would if the skin was removed.
You should also keep your potatoes in a cool, dark place such as the pantry or even better, in the refrigerator.
You can also increase the life span of your potatoes by peeling and cooking them before eating them. That way they will last for up to a week in the refrigerator.
However, this may decrease their nutritional value to some degree.
Sources & references used in this article:
Do potatoes and tomatoes have a single evolutionary history, and what proportion of the genome supports this history? by F De Waal – 2008 – Basic Books
Long-term storage of potatoes and onions in Israel by F Rodriguez, F Wu, C Ané, S Tanksley… – BMC evolutionary …, 2009 – Springer
Long-term storage of irradiated potatoes for use in processed products,(1) by G Felsenstein, E Haas – Canadian Agricultural Engineering, 1980 – csbe-scgab.ca
Biology and management of early dying of potatoes by S Aoki, K Umeda, K Kameyama – Shokuhin Sogo Kenkyusho Kenkyu …, 1982 – inis.iaea.org
The first international merger wave (and the fifth and last US wave) by ML Powelson, RC Rowe – Annual review of phytopathology, 1993 – annualreviews.org
Effects of nitrogen, phosphorus, potassium, and manure factorially applied to potatoes in a long-term study by BS Black – U. Miami L. Rev., 1999 – HeinOnline
Potatoes by WN Black, RP White – Canadian Journal of Soil Science, 1973 – NRC Research Press