Yeast Questions

[Virginia_Ranger]

Hello,

So I am getting ready to brew a 2.5 gallon batch and was wondering how much of the yeast in the picture attached to use (11g pack). Additionally it says to rehydrate the yeast which I have not done before and was looking for a little guidance. Thanks in advance!

 

[thehaze]

Right from the manufacturer: http://www.lallemandbrewing.com/brewers-corner/brewing-tools/pitching-rate-calculator/

But half a pack for 2.5 gallons up to 1.060. I usually use 1 pack for anything 5-6 gallons up to 1.060 without hydrating it and always had good results.

 

[catdaddy66]

To rehydrate, sterilize some water (boil then cool to 85° or so) and pour the yeast in but only half of the pack. Let it sit about 10 minutes then stir it in with a sanitized utensil like a spoon or straw (I use a chop stick). After 20-25 minutes total pour the yeast into your wort.

Easy peasy, lemon squeezy...

 

[Lefou]

Re-hydrating half the packet for a 2.5 gal brew would be fine.
I usually get my yeast ready at the end of the mash, re-hydrate, and let the yeasties energize themselves in weak wort in a covered beaker during the boil. You may see evidence of a whitish foam or froth as the yeast activates and gives off CO2 prior to pitching.

 

[Steveruch]

I normally brew 3 gallon batches and just toss in the whole pack without rehydrating. Rehydrating half a pack and worrying about the other half staying uncontaminated is a chore that I'd rather not bother with.