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Hello all,

Just a quick question to see whether liquid yeasts are able to be sent in the post, couriers etc
My understanding is they need to be kept refridgerated??
My local HBS has a couple but ive noticed they are out of date..

Yes they can be posted, they are usually sent express post with an ice pack. I have used yeats that were 6+ months out of date on my stir plate and they always take off no worries. If you want to pitch direct to the wort I suggest ordering the freshest possible pitchable White Labs you can find!

Ive had them mailed before and they arrived with no ice pack which concerned me a little but still no worries, yeast are pretty temp tollerant

I have had liquid yeasts sent over from the states twice without any fancy packaging and they have all been fine.

How important is it to keep them in the fridge after they have fermented out?

I normally make a starter then add 2/3 to the wort and then keep the rest for next time.

Had a couple outta the fridge for some time in a small bottle with an air lock in-due to space issues.

They will certainly last longer in the fridge. Depending on the type of yeast it could easily last weeks/months out of the fridge though I would certainly not use any of the wort from the starter in this case.

I often buy out of date wyeast at half price,usually I find these sent without a gel pack.Never had a problem with them firing up
just takes a long time.(only buy in winter)

Fresh wyeast have always been sent with a gel pack,and will swell(once smacked) within 48hrs.

I'd never buy out of date wyeast in an Australian summer.

Different yeasts,different strokes