Why Should Potatoes Not Be Stored in the Refrigerator?

Storing potatoes in the refrigerator is not recommended because it causes their starches to convert into sugars, leading to an altered taste and texture.

By Cookist

Potatoes, a staple in many diets worldwide, are often purchased in large quantities. This leads to the question of how best to store them for longevity while maintaining their quality. A common misconception is that refrigerating potatoes is the ideal way to preserve them. However, storing potatoes in the refrigerator can actually be detrimental to their quality and taste.

The primary reason to avoid refrigerating potatoes lies in their composition. Potatoes contain starch, a type of carbohydrate that provides energy. When potatoes are stored in a cold environment, such as a refrigerator, the low temperatures cause the starches to convert into sugars. This process, known as cold-induced sweetening, can lead to an increase in sugar content, altering the potato's natural flavor. This change not only affects the taste, making them unpleasantly sweet, but also impacts their texture, often resulting in a grittier consistency.

Moreover, when these high-sugar potatoes are cooked at high temperatures, as in baking or frying, they can produce a chemical called acrylamide. The formation of acrylamide is more pronounced in foods with higher sugar content that are cooked at high temperatures, especially in frying. Acrylamide has been identified as a potential health concern, as it is classified as a probable human carcinogen based on studies in laboratory animals.

Instead of refrigeration, it is recommended to store potatoes in a cool, dark, and well-ventilated place. A pantry, cupboard, or a root cellar are ideal storage locations. These environments maintain a moderate temperature that is not too cold, preventing the conversion of starches into sugars. Additionally, a dark environment helps to avoid exposure to light, which can cause potatoes to produce solanine, a natural toxin that can lead to gastrointestinal discomfort if ingested in large amounts.

Furthermore, proper ventilation is crucial in preventing the buildup of moisture, which can lead to spoilage and the growth of mold. Potatoes should also be stored away from other produce, especially onions, as they can release gases that accelerate the spoilage of each other.

In conclusion, while it might seem counterintuitive, refrigerating potatoes is not advisable. The cold environment of a refrigerator can lead to changes in flavor and texture and may increase the formation of potentially harmful compounds when cooked at high temperatures. To ensure the best quality and safety of potatoes, store them in a cool, dark, and well-ventilated space away from other produce. This method will help maintain their natural taste and texture, contributing to delicious meals.

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