Why proper potato storage matters: Debunking fridge myths

Where should potatoes be stored? Is the fridge really the best option? Besides becoming soft and starting to wrinkle, the tubers can also turn into a ticking time bomb. At least, that's what was long believed. What have the latest studies shown?

Most people store potatoes at home or in pantries, but not everyone does this properly. British nutrition specialists emphasise that the storage location is crucial to potato quality.

The British Food Standards Agency (a government agency responsible for public health in relation to food) a few years ago advised against storing raw, unpeeled potatoes in the fridge. Why?

It was believed that potatoes stored at below 6°C produce more sugars. These sugars, when baked or fried, were thought to combine and create a neurotoxic substance called acrylamide, which, in large amounts, can damage the nervous system, disrupt metabolism, and even contribute to cancer development.

However, later studies showed that storing potatoes in the fridge does not significantly increase the risk of acrylamide formation compared to storing them in a cool, dark place.

The optimal temperature for storing potatoes is between 7°C and 10°C. They should be stored in a dark place to be safe to eat and retain their nutritional value. In-home conditions, a basement or pantry will be ideal for this purpose.

Too high a temperature will cause the potatoes to sprout or rot. The air humidity should be moderate, about 80-90% (if too dry, they can dry out and wrinkle, and if too humid, they can mould). In addition, the potatoes' exposure to sunlight should be minimised.