I've bought this yogurt maker (the only one I've been ever able to find in the country I'm living), and it only has a simple on/off button.
Somewhere in the manual, it's written that "Good yogurt takes eight to 15 hours, depending on the type of milk used."
Now I'm wondering how can I know when my yogurt will be ready.
The manual says:
Preparation of the yogurts
[ yogurt making instructions ]
When the yogurt maker cools off (eight to ten hours after having turned on), make sure that the yogurts have been set. If they haven't, the starter culture did not have enough time to work: start over.
Instructions are really confusing on this point, and it's been something like 15 years since I used a yogurt maker, so I'm not such an expert in yogurt making at home. Does the maker cool off by itself, or do I need to turn it off?