yogurt

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  • yogurt
    • step 1; milk is heated to be sterilised, this kills any bacteria
      • step 2; milk protein is then added
        • step 3; after being cooled lactobacillus is added
          • step 4;the lactobacillus is left to ferment at a warm temperature, so that it converts it into lactic acid
            • step 5; the lactic acid causes the pH to drop, and the milk solidifies into yogurt
    • The bacteria used in making yogurt are   Lactobacillus. Milk contains a sugar called lactose, which the bacteria break to form lactic acid.
      • the lactic acid helps to...
        • prevent bacteria
        • denature milk proteins

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