My favorite so far is the trader joe s greek whole milk yogurt as starter and fresh local organic raw milk that is only heated to 110 f.
Yogurt room temperature okay.
While milk for instance will spoil after a few hours at room temperature some cheeses are safe to eat after the same amount of time.
Keeping cultures warm in winter 1.
Department of health human services yogurt can sit at room temperature for 2 hours.
When room temperature dips below 70ยบ f try setting your yogurt jars in a closed oven to culture.
Then take temperature readings at different intervals during the culturing time frame to ensure the temperature range is correct.
According to the u s department of heath human services yogurt should be discarded after two hours of sitting out at room temperature between 41 f and 90 f.
However if the temperature exceeds 90 f yogurt can sit outside the refrigerator for no longer than one hour.
For average room temperature above 40 degrees fahrenheit yogurt is best discarded if kept out for more than two hours.
How long yogurt can be unrefrigerated depends on the room temperature.
First of all the yogurt is packaged air tight no additional bacteria can enter and the only bacteria inside should be the yogurt culture that makes the yogurt yogurt.
I have also been making yogurt for years and have had good luck with commercial yogurt as the starter.
If it says on the package that it contains live cultures it should be fine.
Any longer than that and you should throw it out.
Maintaining temperatures when culturing thermophilic yogurt.
According to the u s.
The yogurt needs to be discarded after just one hour.
Read the safe to eat yogurt left out at room temperature.
Eat your yogurt quickly or at least before the two hour crucial minimum.
Now if the temperature is above 90 degrees fahrenheit you can just blindly reduce the time by half i e.
This guideline also applies when it s taken out of the fridge for a snack.
Considering that the yogurt needs to be 100 110f there s a pretty good chance you can hit that range with a fairly constant room temperature.
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Second most bacteria needs good conditions to reproduce most need.