Milk is spoiled due to the growth of bacteria, particularly lactic acid bacteria, which convert lactose into lactic acid, causing it to sour and curdle.
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Despite the milk not being fit for direct consumption, here are 6 ways in which you can use it:
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Make cheese Spoiled milk can be curdled to make simple cheeses like ricotta or cottage cheese.
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Making curd Sour milk can be used to make curd. Heat it gently and add a bit of vinegar or lemon juice to separate the curds from the whey.
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Tenderising meat The lactic acid present in meat can be used to tenderise meat. Soak the piece of meat in milk for few hours for best results.
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DIY skincare A lot of people use curdled milk for their DIY skincare routines. It can help exfoliate and soften the skin.
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Baking The acidity in spoiled milk can replace buttermilk or yogurt in several baking recipes.
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Fertiliser Sour milk is rich in calcium. Dilute it with water and add to acid-loving plants such as tomatoes and blueberries.