Dates on the packages?

When using the Mrmalty starter calculator. It's important to put in the date the yeast was made to help calculate the viability. Unfortunatly, I've noticed the manufactures only put a "best before" date on the package. I know for the white labs vials the "born on" date is 4 months before the "best before" date.

What about wyeast and fermentis? Anybody know how far to count back when figuring the "born on" date from the "best before" date?

I think wyeast is 3 months, but I'm not positive.

Anybody know how the dates work on the fermentis packages. I assume they are way longer then the liquid stuff. 2 years maybe?

The Wyeast date is the date the pack was produced, not the best before date.

Denny said:

The Wyeast date is the date the pack was produced, not the best before date.

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good to know, thanks!

From the Fermentis website:

The shelf life is shown on the sachets individually and is two years from the date of manufacture

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