Home Page
   Articles
       links
About Us    
Traders        
Recipes            
Latest Articles
yeast
Page Previous  1, 2
 
Post new topic   Reply to topic    Downsizer Forum Index -> Recipes, Preserving, Homebrewing
Author 
 Message
dpack



Joined: 02 Jul 2005
Posts: 46235
Location: yes
PostPosted: Sat Mar 28, 20 12:23 pm    Post subject: Reply with quote
    

if at first it seems dead , persist a while.

when you add fresh or freshdried yeast to a starter there are billions which become 2x billions >4x billions etc

if the starter you use has only a few viable yeast it goes few>2 few>4few and so on until eventually you get to the billions point and then it only takes a couple of generations for lots.

a bit like epidemiology
in those terms yeast has an R2 and a doubling rate of about 15 mins at the optimum temperature/media for that strain,20 to25C is a fair bet for bread yeasts, wine a bit cooler.(they will grow faster a bit warmer but so will a load of unpleasant things and if there are more of them than the yeast they will dominate.

ie from inoculation with a small number of viable yeast most of the time to build up a useable population the mix will have very few active cells and will seem "useless" until enough generations have happened
it is the last couple of generations that you want for raising breads.

once you get one going, it is easy to use 3/4 for baking and dilute/feed the rest for next time or keep a blob of dough in a cold place and use that as a new inoculant for the next starter.

a nice thing with yeast is that Gt is very temp dependant, full speed at 30C and a Gt of 15 mins, at 10C Gt might be as low as 2 hrs and at 1C days or some will have "hibernated" ,they form a rather neat coating that protects the live bits and suspend their activities until times are better suited to their needs.

i have found life in some very unpromising yeasts that were well out of date, in open sachets etc.

 
sean
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 42219
Location: North Devon
PostPosted: Sat Mar 28, 20 4:29 pm    Post subject: Reply with quote
    

Nah, gave ours ages and it really wasn't doing anything. Also none to be had in town.

 
dpack



Joined: 02 Jul 2005
Posts: 46235
Location: yes
PostPosted: Sat Mar 28, 20 4:37 pm    Post subject: Reply with quote
    

sean wrote:
Nah, gave ours ages and it really wasn't doing anything. Also none to be had in town.


dead at a guess.

a damp bowl, dusted with flour. outside will collect a variety of wild ones in a few days.

culture and select from there in.

 
Nicky cigreen



Joined: 25 Jun 2007
Posts: 9887
Location: Devon, uk
PostPosted: Sat Mar 28, 20 5:11 pm    Post subject: Reply with quote
    

dpack wrote:
if at first it seems dead , persist a while.

when you add fresh or freshdried yeast to a starter there are billions which become 2x billions >4x billions etc

if the starter you use has only a few viable yeast it goes few>2 few>4few and so on until eventually you get to the billions point and then it only takes a couple of generations for lots.


that's a good point. might be worth persisting with elderly yeast.

 
sean
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 42219
Location: North Devon
PostPosted: Sat Mar 28, 20 5:17 pm    Post subject: Reply with quote
    

dpack wrote:
sean wrote:
Nah, gave ours ages and it really wasn't doing anything. Also none to be had in town.


dead at a guess.

a damp bowl, dusted with flour. outside will collect a variety of wild ones in a few days.

culture and select from there in.



I'm just doing these instead. Chucked some onion seeds, fennel seeds, cumin seeds and a splosh of olive oil in last night. Boy Wonder said they were a bit like Gareth's*. It's a nice scalable recipe too. 50g of flour makes one medium plate sized bread.

*They aren't a patch on Gareth's, he's just being polite.

 
Nicky cigreen



Joined: 25 Jun 2007
Posts: 9887
Location: Devon, uk
PostPosted: Sat Mar 28, 20 5:30 pm    Post subject: Reply with quote
    

yeh i often make flatbreads, my favourite recipe uses yogurt, but you can make nice without.

 
tahir



Joined: 28 Oct 2004
Posts: 45674
Location: Essex
PostPosted: Sat Mar 28, 20 6:01 pm    Post subject: Reply with quote
    

She’s found a packet at the back of the cupboard

 
tahir



Joined: 28 Oct 2004
Posts: 45674
Location: Essex
PostPosted: Sat Mar 28, 20 6:02 pm    Post subject: Reply with quote
    

Gareth makes brilliant parathas

 
dpack



Joined: 02 Jul 2005
Posts: 46235
Location: yes
PostPosted: Sat Mar 28, 20 6:08 pm    Post subject: Reply with quote
    

tahir wrote:
Gareth makes brilliant parathas


beef cooked as bear is rather memorable in a good way as well, i snaffled half the gravy from that for the peasant's lunch next day

 
Fee



Joined: 21 Mar 2005
Posts: 15922
Location: Earth
PostPosted: Sun Mar 29, 20 8:46 am    Post subject: Reply with quote
    

I had fortunately ordered more at Christmas from Suma without realising I still had most of a bulk box left.

I'm posting out baggies of it (Doves farm fast acting) this week, pm me your address if you want adding to my list, reckon I could take another 5 or 6 people.

I need to decant it so it goes through the post, I'm not touching ANYTHING out there and definitely not going to the post office.

 
Shan



Joined: 13 Jan 2009
Posts: 9075
Location: South Wales
PostPosted: Sat Apr 04, 20 10:49 am    Post subject: Reply with quote
    

Thank you so much!

 
tahir



Joined: 28 Oct 2004
Posts: 45674
Location: Essex
PostPosted: Sat Apr 04, 20 1:07 pm    Post subject: Reply with quote
    

Thanks Fee but we’re ok, max we do is two loaves a week so we have enough for a while

 
Mistress Rose



Joined: 21 Jul 2011
Posts: 15983

PostPosted: Sun Apr 05, 20 8:04 am    Post subject: Reply with quote
    

Thanks Fee. I am all right at the moment, but if the bread flour and yeast remain in short supply, I might take you up on that later.

 
pricey



Joined: 28 Feb 2005
Posts: 6444

PostPosted: Mon Apr 06, 20 10:55 am    Post subject: Reply with quote
    

Thank you so much Fee it came this morning

 
dpack



Joined: 02 Jul 2005
Posts: 46235
Location: yes
PostPosted: Wed Apr 08, 20 12:08 am    Post subject: Reply with quote
    

if olaf is sainted he will be available post permitting ( and i will make sure he can vent tidily in transit rather than swell up like a bovine hernia )

he is a very nice wild caught and selected by tweaks of his conditions starter

 
Post new topic   Reply to topic    Downsizer Forum Index -> Recipes, Preserving, Homebrewing All times are GMT
Page Previous  1, 2
Page 2 of 2
View Latest Posts View Latest Posts

 

Archive
Powered by php-BB © 2001, 2005 php-BB Group
Style by marsjupiter.com, released under GNU (GNU/GPL) license.
Copyright � 2004 marsjupiter.com