That depends on a lot of factors prime is probably if it is salted or not (and if so how salt) and how fresh it is as well as how sour the cream was when the butter was made.
a few days is no problem, weeks is less probable, more than a month is very unlikely.
Provided it is in an airtight container (a plastic bag and/or a breadbin), up to a week.
It takes about 2 hours for bread to spoil at room temperature.
2 days
Butter can last for days at room temperature. But it is not recommended to leave it out for that long.
Yes - butter existed long before the 1930s - it was present long before the middle ages.
I can be left out for quite a while, we mostly leave ours out and it last at least 2 weeks.
salt added to butter to lower down temperature so it may keep frozen long time
They tend to lose their best texture after about a week.
For 2 minutes
.
When you are baking a lot of recipes call for room temperature butter and sometimes you forget to set it out before hand. If you pound the butter in a Ziploc bag and flatten it out then it will reach room temperature a couple of minutes after.
There is not set amount of time. It would depend on such factors as the power drawn by the lights, the rating and condition of the battery and the temperature.
At room temperature butter decomposes. One of the products of decomposition is butyric acid (a saturated fatty acid) , which gives spoiled butter a rancid taste. I keep butter in the freezer. Clarified butter (or Indian Ghee) will last many many months in the frig and probably indefinite in the freezer.
Boiled egg lasts for two days before it goes bad.
# it goes below zero all the time