Yeast nutrient age...

[daimyo2k]

Hey guys...

How long is yeast nutrient good for? Got some almost a year ago, opened and was kept sealed in a zip-lock in a cool area. My cider is done fermenting and has a sulfur smell. I read that it might be that there was not enough nutrients, that's why I'm thinking the nutrient might be outdated. Any thoughts?

Thanks...
Stephen =]

 

[brewSJ]

I always get a bit of a sulfur smell at the end of fermentation (when the yeast have started to run out of sugars to eat). It's always gone away after a day or two.

I only worry about sulfur if it happens at the beginning of fermentation, during the growth phase of the yeast.

 

[Kees]

Minerals should not spoil. They may cake but that should not be a problem.