Friday, 1 November 2013

How yoghurt is made

We looked at lots of different explanations and noticed what was the same and what made them successful. We generated our success criteria from all this thinking.
We had to do some finding out about how yoghurt is made then we planned our writing using the i-pad
WALT: write to explain.

As a class we wrote this together!

How yoghurt is made

Yoghurt is made by introducing good bacteria (like acidophilus) into milk.

Milk is collected from the farmer. It is pasteurised to kill all the bacteria in the milk. When milk is pasteurised it is only heated for a very short time so the milk still tastes the same. 

Next the good bacteria is added to the pasteurised milk. Mix the milk and bacteria and leave somewhere warm but not too hot because the good bacteria will die. Leave the warm milk and bacteria overnight so the bacteria have time to eat the lactose.

The bacteria eats the lactose and makes acid. The acid makes the milk thicken and go sour. This thickened, sour milk is yoghurt.

This is how you make yoghurt. Cool the yoghurt and ENJOY!

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