Second most bacteria needs good conditions to reproduce most need.
Yogurt room temperature okay.
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.
According to the u s.
Maintaining temperatures when culturing thermophilic yogurt.
It will only be a problem if it is already opened it sat a few days and the room temperature is rather high.
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.
Then take temperature readings at different intervals during the culturing time frame to ensure the temperature range is correct.
For average room temperature above 40 degrees fahrenheit yogurt is best discarded if kept out for more than two hours.
This guideline also applies when it s taken out of the fridge for a snack.
I have also been making yogurt for years and have had good luck with commercial yogurt as the starter.
Now if the temperature is above 90 degrees fahrenheit you can just blindly reduce the time by half i e.
However if the temperature exceeds 90 f yogurt can sit outside the refrigerator for no longer than one hour.
Any longer than that and you should throw it out.
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.
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.
For me i just set my house s thermostat to get 70f where i make my yogurt and let it do it s thing.
When room temperature dips below 70ยบ f try setting your yogurt jars in a closed oven to culture.
Keeping cultures warm in winter 1.
If it says on the package that it contains live cultures it should be fine.
How long yogurt can be unrefrigerated depends on the room temperature.
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.
Discussion from the chowhound general discussion yogurt food community.
Department of health human services yogurt can sit at room temperature for 2 hours.
Eat your yogurt quickly or at least before the two hour crucial minimum.