{"id":34168,"date":"2025-07-16T11:00:00","date_gmt":"2025-07-16T08:00:00","guid":{"rendered":"https:\/\/www.craftoil.net\/?p=34168"},"modified":"2025-07-14T08:03:46","modified_gmt":"2025-07-14T05:03:46","slug":"vyhotovlennia-svizhoi-olii-na-maslopresi-craftoil","status":"publish","type":"post","link":"https:\/\/www.craftoil.net\/en\/oils-en\/vyhotovlennia-svizhoi-olii-na-maslopresi-craftoil\/","title":{"rendered":"Why cooking oil turns bitter and how to use spoiled oil safely"},"content":{"rendered":"\n

Vegetable oils are a familiar and essential part of the modern diet. They are rich sources of vitamins, micro- and macronutrients, and essential omega fatty acids \u2014 many of which the human body cannot produce on its own but are crucial for healthy functioning.<\/p>\n\n\n\n

Oils are widely used for dressing salads and side dishes,<\/a> saut\u00e9ing and frying meat, fish, and vegetables, and as ingredients in marinades, brines, sauces, and gravies. Simply put, the culinary value and health benefits of plant-based fats are hard to overestimate.<\/p>\n\n\n\n

What oil should not be consumed<\/h2>\n\n\n
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\"Not<\/a><\/figure>\n<\/div>\n\n\n

Over time, oils like sunflower, corn, flaxseed, and others may develop a bitter or unpleasant taste, indicating spoilage and making them unsafe for consumption. However, bitterness isn’t the only warning sign. Spoiled oil may also show:<\/p>\n\n\n\n

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  • Cloudiness or sediment forming at the bottom;<\/li>\n\n\n\n
  • Sharp, unpleasant odor not typical of that oil;<\/li>\n\n\n\n
  • Color change, usually darkening;<\/li>\n<\/ul>\n\n\n\n

    These signs indicate that the oil has oxidized and should no longer be used in cooking or for health purposes. Oxidation is caused by prolonged exposure to air and\/or sunlight, breaking down fat-soluble vitamins and creating substances harmful to human health.<\/p>\n\n\n\n

    The molecular structure of unsaturated fats includes carbon-carbon double bonds, which break when they react with oxygen. This chemical reaction destroys omega fatty acids and results in the characteristic rancid taste and smell.<\/p>\n\n\n\n

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