Excuse my ignorance but why powdered milk instead of raw milk?
Good question and I am not 100% sure of the correct reasons but from my experience fresh milk just does not work as well - it may be that the chemistry of shop bought milk has been altered via homogenisation and pastuerisation.
Also using milk powder allows you to adjust the thickness of the mix and resulting yoghurt, and is a lot more convenient especially when traveling.
reply
This also works perfectly with normal milk. Perhaps the consistency is not always exactly the same.
reply
I never found fresh milk consistent although it may depend on the type of fresh milk you use. Was using full cream pastuerised and homogenised, as unhomogenised is quite expensive here and very hard to get unpastuerised. Fresh unprocessed milk from the cow might be different again?
reply
Funnily enough, the consistency always gets better when I use pasteurized milk instead of fresh milk. The fresh milk always leaves the yoghurt a little watery. But the result really varies from milk to milk and I haven't yet found out what exactly makes the difference.
reply
Fresh unpasteurised may have some natural bacteria present that might change the culture of the yoghurt?
reply
Exactly. I could try boiling the fresh milk and then see how the consistency behaves.
reply
boiling raw milk negates all the benefits of using it :)
reply