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2022
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10
Why does some chocolate turn white when stored in the refrigerator?
Author:
1. This is either a sugar bloom caused by the chocolate’s surface crystallization or an oil bloom resulting from fat separation. In humid refrigerator conditions, the sugars in chocolate can dissolve in surface moisture; as the moisture evaporates, sugar crystals are left behind. Even in sealed packaging, moisture can seep in through folds or edges of the wrapper, leaving a thin, grayish-white sugar bloom on the chocolate’s surface. Additionally, cocoa butter crystals may dissolve and migrate to the surface, where they recrystallize, leading to oil bloom.
2. Secondly, the temperature inside a refrigerator is typically below 10°C. When chocolate is removed from the fridge and exposed to room temperature, moisture quickly condenses on its surface, exacerbating frosting and blooming.
Moreover, after refrigeration, chocolate that develops a frosty surface not only loses its original rich aroma and texture but also creates an environment conducive to bacterial growth, making it prone to mold and spoilage. Consuming such chocolate can pose health risks.
3. The ideal storage temperature for chocolate is 5°C to 18°C. In summer, if the room temperature is too high, it’s best to seal the chocolate in a plastic bag first, then store it in the refrigerator’s chill compartment. When you take it out, don’t open it right away—let it come to room temperature gradually, and only open it when it’s close to room temperature before consuming.
4. The best way to store it is to consume it as soon as possible and avoid refrigerating it.
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