Q&A for How to Make Yogurt from Powdered Milk

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  • Question
    How many kilos of powdered milk will mix well with how many liters of water?
    Community Answer
    Use 1 kg powdered milk to 5 liters water. If you want thick yogurt, add1 kg powdered milk to 4 liters water.
  • Question
    Can I use a whisk instead of blender?
    Community Answer
    Yes, a whisk is okay, as long as you make sure to whisk it thoroughly. It will just take a little more effort on your part.
  • Question
    What bacteria is used in yogurt?
    Community Answer
    Acidophilous is one of the main probiotic bacteria that cultures the milk into yogurt. When choosing a store-bought yogurt, check the ingredient label to be sure the product contains active live cultures.
  • Question
    Can I heat the oven and put my milk in it to set?
    Community Answer
    You can put the yogurt in the oven, but I would not recommend heating it.
  • Question
    In order to make the 4 cups of Greek yogurt, do I just blend powdered milk in the blender? And how much water do I use?
    Community Answer
    Read the instructions on your container of powdered milk. Usually it is 3 parts water to 1 part powdered milk. You can vary the proportions to get thinner or thicker milk.
  • Question
    Is there a preservative that can make the yogurt last longer?
    Community Answer
    There may be such a preservative, but it's not needed since yogurt is cultured milk that's been fermented with lactic acid bacteria. The fermentation process that occurs when you make your own yogurt increases its shelf life -- refrigerated, it should be fine for 45 days or more provided you've used clean containers.
  • Question
    Do I need to use warm water to blend the milk?
    Community Answer
    Yes. Heat cold tap water to boiling, then let it cool to about 110 degrees F.
  • Question
    Can I use water from the tap that is not hot, but cool?
    Community Answer
    No, because the heat from the water helps culture the yogurt. Put cold tap water in a pot and boil it. Then, remove it from heat and let it cool to about 110 degrees F before mixing it with the powdered milk.
  • Question
    How much store-bought yoghurt should I mix? What is the yoghurt-to-milk ratio? If I want to make 1 jar of yoghurt, how many jars of hot water do I need to put into the cooler?
    asn1
    Community Answer
    Only for the first run do you need to buy yoghurt from the shop (although some people buy a dry starter culture and use it every time). You need only about a tablespoon, so buy the smallest plain yoghurt you can find. If it has some sugar, that's OK, as you will dilute it in the milk. For the next run, use a tablespoon of the current batch and add that to the milk. The yoghurt culture will vastly outnumber any other organisms and will multiply quickly in the warm milk. As you keep making more yoghurt from the previous batch, the taste can become more sour. If so, you can simply buy another plain yoghurt.
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