If I pour one of those probiotic drinks in some normal milk and leave it for 'a while'

[FlamingTomato]

Will it turn into more probiotic drink?

Or will it just be very weak probiotic drink?

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Totally guessing here, but I think you'd need toleave it in a yoghurt maker for that to work. I've never tried making yoghurt, but I remember my mum used to do it...when she wasn't making Clothkits sundresses or making date flapjacks or elderberry wine

Somewhere I have a recipe for making home-made yoghurt. I think you have to warm up the milk first. But when I tested this out (for a kid's science site) I found very few of the 'probiotic' yoghurts and drinks actually worked. And I believe independent tests have shown the amount of live 'good bacteria' actually in these drinks tends to be rather small.

I also think that it tends to come out as set yoghurt rather than thin or creamy, and I can't remember what you have to do to change the consistency. Someone with a bit more knowledge might come along soon and enlighten us all...

okay i have found my old instructions. you have to sterilise the containers beforehand so nothing nasty grows in them, warm the milk (i used 300ml), add a couple of teaspoons 'live' yoghurt and leave in a warm place (ideally an airing cupboard) for a few days. to make more probiotic drink you would probably need to dilute the result with more milk.

You can also make it in a flask mummypig.