For those still worried about milk going bad, freezing is another effective option. Milk can be frozen for up to three months ...

you can make a quick substitution for buttermilk by souring some fresh milk. Add 1 tbsp of lemon juice to every 100ml of milk called for in the recipe. Stir the lemon juice into the milk and allow ...

The bacteria consume lactose (the sugar in milk) and produce lactic acid which is responsible for the low pH of buttermilk. On the other hand, sour cream is made by adding lactic acid-producing ...

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.

These days it is commonly made commercially; a bacterial culture being added to skimmed or whole milk. Buttermilk has a slightly sour taste and the lactic acid in combination with baking soda or ...