Using yeast from previous brew

[duotwr]

Hi,

I bottled a brew a couple of weeks ago which used Safale US-05. After I'd transferred from the primary I washed out the settled yeast, and transferred it to a couple of small jars - which have been sitting in my fridge for a couple of weeks.

I'd like to use these for a brew this week - how do I do it? Do I need to make a starter to get them active again, or can I just bring them up to room temp and pitch directly into the wort? I do BIAB and my batches are only around 10 or 11 litres. The yeast is in 250ml jars - and has settled to about 1.5cm in the bottom of each.

I've seen the Mr Malty calculator - a quick play with it suggests around 100ml of slurry. Presumably this would be the slurry I get when I shake up one of my settled jam jars?

Any advice gratefully received!

Keith

 

[Stapsin]

In my experience just taking the yeast out of the fridge prior to brewing and letting it warm up before pitching it into the wort at around 20C works fine. Would maybe consider making a starter or pitching 2 if my SG was particularly high but other than that should all be fine.

I've also started making more yeast a couple of days before brewing using packets yeast/liquid yeast in a demijohn with some DME and then keeping that in the fridge to save on yeast costs.

http://uk-homebrew.tripod.com/id45.html

 

[duotwr]

OK great, thanks. I'll give it a try this weekend - got some spare dried yeast in case it doesn't work.

Keith