Are sunburned potatoes okay to eat?
John Johnson
Updated on April 12, 2026
Typically if the potato has been exposed to light (sun light, fluorescent light, spots, etc.) it will convert the skin to Solanine, which if ingested in large quantities can be toxic. But, you'd have to eat much more than a single potato to feel ill.
Can you eat a sunburned potato?
Although the green color itself is not harmful, it may indicate the presence of a toxin called solanine. Peeling green potatoes can help reduce solanine levels, but once a potato has turned green, it's best to throw it away.Does sunlight make potatoes poisonous?
Potatoes turn green when they're exposed to sunlight. As the plant prepares for photosynthesis and sprouting (by producing green chlorophyll), it develops a bitter, poisonous chemical (solanine) to discourage hungry animals from eating it. The green color serves as a warning that toxic solanine is present.When should you not eat potatoes?
In addition, when potatoes sprout, the starch in the potatoes is converted into sugar. If the potato is firm, it has most of the nutrients intact and can be eaten after removing the sprouted part. However, if the potato is shrunken and wrinkled, it should not be eaten.What does a sunburn potato look like?
Some cultivars are more susceptible than others. Tubers exposed to the sun and high temperatures for several hours, in the field or later, suffer from “sunburn” and take on a metallic appearance with browning of the underlying tissues (“golden blotch” or sunscald).Is it safe to eat green or sprouted potatoes?
Can you eat potatoes with a green tinge?
Green potatoes develop a bitter taste, making them unpleasant for recipes. If you accidentally bake or fry a green potato and taste the bitterness, throw the rest away. It's better to err on the side of caution than risk your health.Can you eat potatoes with a green tinge UK?
Peeling of green potatoes will greatly reduce the levels of glycoalkaloids as they are localised just below the surface of the peel. However, if these potatoes taste bitter after peeling, then it's best not to eat them.How do I know if a potato is bad?
Raw potatoes should be firm to the touch with tight skin that's free of large bruises, black spots, or other blemishes. If a potato has become soft or mushy, you should throw it out. Though it's normal for potatoes to smell earthy or nutty, a musty or moldy odor is a hallmark of spoilage.Can you get sick from old potatoes?
What happens if you eat bad potatoes? Bad potatoes contain high levels of solanine and can cause solanine poisoning. Symptoms include nausea, diarrhea, stomach cramps, vomiting, headache, dizziness, among other things.Is it OK to use wrinkled potatoes?
If the potato is not as firm as it used to be, and the skin has started to become somewhat wrinkly, it's okay to eat it. Such tubers might be a bit difficult to peel, and they will definitely work better in mashed potatoes than fresh fries.How long do effects of solanine poisoning last?
Symptoms may last for 1 to 3 days, and hospitalization may be necessary. Death has been reported, but is rare.How much solanine is toxic?
It is suggested that doses of 200–400 mg for adult humans can cause toxic symptoms (20–40 mg for children). Most commercial potatoes have a solanine content of less than 0.2 mg g−1. However, potatoes that have been exposed to light and have started to turn green can show higher concentrations.Why do potatoes go green in sunlight?
Potato tubers turn green when they are exposed to sunlight during growth or storage. The green comes from the pigment chlorophyll. Potato tubers exposed to light will become green naturally as the plant seeks to harvest the light. Potato varieties can differ in their sensitivity to light.Can potatoes be poisonous?
Reports of potato poisoning state that unripe, sprouting, or green potatoes contain toxic alkaloids, including solanine. When ingested, they can cause drowsiness, weakness, apathy, and gastrointestinal symptoms. This is rare — in most cases, potatoes are safe to eat and are a staple food in many countries.What is solanine poisoning?
Abstract. Solanine is a toxic glycoalkaloid known to accumulate under certain conditions in potato plant, sprouts and tuber in levels which, if ingested, may cause poisoning in humans and farm animals.What type of food poisoning is solanine?
Solanine is a glycoalkaloid poison found in species of the nightshade family within the genus Solanum, such as the potato (Solanum tuberosum), the tomato (Solanum lycopersicum), and the eggplant (Solanum melongena). It can occur naturally in any part of the plant, including the leaves, fruit, and tubers.Can you eat potatoes with sprouting eyes?
By Leah Brickley for Food Network KitchenThe short answer is yes. Potatoes that have sprouted are still OK to eat, but only once you've removed the sprouts.