I recently bought a yoghurt maker from Lakelands. It cost £19.99 and since I got it, I’ve used it about 10 times and it’s great.
You only need two teaspoons of yoghurt as a catalyst to make a whole litre so if you keep some back at the end of every batch you never have to buy yoghurt again.
You do need milk though. Any milk can be used but the easiest option is Uht milk as it has been pasturised already (heated and cooled in a specific way to eliminate bacteria) otherwise you have to do this yourself and it time consuming and (to me) more complicated than its worth.
I’ve also purchased some muslin cloth to strain the yoghurt. This makes it thicker and more the consistency of total yoghurt that the runnier natural or Greek style yoghurts you get in the supermarket.
There were a few options I found when looking for this yoghurt maker, including a £10 option from Wilkos. I ruled this one out because although the machine was cheaper, they advised you to use sachets of powder with milk to make the yoghurt and the packets were £2.50 each (plus milk) so overall it wasn’t as cost effective.
There were also other options that for example had several jars that you incubated at once however for me space is an issue so I wanted something more compact (and I got 4 smaller but ideally sized Tupperware tubs from wilkos to store the yoghurt in).
Admittedly I don’t eat flavoured yoghurt, I tend to eat plain yoghurt with fruit and honey or make my version of a yoghurt salad as a savoury option which I enjoy with spicy foods. So I can’t say weather this would be the right product for you if you’re looking to make flavoured yoghurt.
It’s definitely a good option for me though as its got no added sugars at all and I can make it to whatever texture I require using muslin cloth.