Author Topic: Sourdough starter quantity predictive model  (Read 17835 times)

0 Members and 1 Guest are viewing this topic.

Offline TXCraig1

  • Registered User
  • Posts: 10606
  • Location: Houston, TX
Re: Sourdough starter quantity predictive model
« Reply #140 on: January 06, 2014, 09:21:02 PM »
Looks great.
I love pigs. They convert vegetables into bacon.


Offline Serpentelli

  • Supporting Member
  • *
  • Posts: 1077
  • Age: 47
  • Location: Wilmington, NC
Re: Sourdough starter quantity predictive model
« Reply #141 on: January 07, 2014, 12:01:43 PM »
Ditto Karl,

Great looking dough both pre- and post-bake!

John K

Offline anverc

  • Supporting Member
  • *
  • Posts: 74
  • Location: Albany, NY
  • gameplay engineer / pizza maker
    • sourdough utility app
Re: Sourdough starter quantity predictive model
« Reply #142 on: February 24, 2014, 03:09:02 PM »
I made a web-app timer utility using Craig's models.  I moved my comment about it to a new thread: http://www.pizzamaking.com/forum/index.php?topic=30444
« Last Edit: February 25, 2014, 02:25:39 PM by anverc »
i'm making a pizza utility app.  check it out and give suggestions! http://www.pizzamaking.com/forum/index.php?topic=30444.0

Offline Chicago Bob

  • Lifetime Member
  • *
  • Posts: 8920
  • Location: North Carolina
  • Easy peazzy
Re: Sourdough starter quantity predictive model
« Reply #143 on: February 25, 2014, 01:29:29 AM »
I started working on a smartphone accessable web-app using Craig's data and some reversing of the math used in the googledocs spreadsheet.

i got to the point where I have something that you can use to time your dough proofing after you've made it.  After getting this far i'm wondering if it isn't actually very useful and what might make it more useable - perhaps i can take Craig's %starter prediction and add it as a separate mode on top of this.


Here's the web-app:

http://ssqpm.makebendrink.com/

try it out on your computers and smart phones (i've tested with win7-chrome and ios-safari).  it's basically an eggtimer that does all the sourdough prediction lookups for you.  I think this is probably only useful in the cases that Craig lays out, where your proofer isn't running at the same temp that you are used to.  Or if you're like me and you don't plan ahead very well, at least you can now track what you're doing :D

this saves the data on your device.  If we end up making it useful enough I can have it back up to the cloud... and maybe we can get it added to this site. 


how to use it:
- when you first go to the site (or after you reset your data) it will ask you what starter percent you are using.
- next it will ask you to add a time stamp and temperature.  If you just mixed your dough, just click the "NOW" button, modify your temp and click Add
- you can add new timestamps in the future by clicking the Add Timestamp button
- you can modify old timestamps by clicking on them
- as an added bonus, since i'm supporting Celcius, you can mix and match your temperature readings if you want to.  it will save the last C/F selection you've made

- when you re-visit the site, it should keep your data around (uses html5 client data storage, so it requires your browser to support html5)
 - it also saves the last temp you used, in-case you never switch the temperature up much you won't have to modify that often.
Very clever/neat.  8)
"Care Free Highway...let me slip away on you"

Offline Tampa

  • Lifetime Member
  • Global Moderator
  • *
  • Posts: 1244
Re: Sourdough starter quantity predictive model
« Reply #144 on: February 25, 2014, 08:48:46 AM »
Nicely done anverc!  Thanks for sharing this and giving a nod to Craig on the screen.
Dave

Offline anverc

  • Supporting Member
  • *
  • Posts: 74
  • Location: Albany, NY
  • gameplay engineer / pizza maker
    • sourdough utility app
Re: Sourdough starter quantity predictive model
« Reply #145 on: February 25, 2014, 09:39:40 AM »
Nicely done anverc!  Thanks for sharing this and giving a nod to Craig on the screen.
Dave

thanks! without all his research/data/math i wouldn't have been able to make this.  I don't understand the math at all, i'm just blindly using it (even to the extent that some of my variable names make no sense).
« Last Edit: February 25, 2014, 02:27:48 PM by anverc »
i'm making a pizza utility app.  check it out and give suggestions! http://www.pizzamaking.com/forum/index.php?topic=30444.0

Offline Pete-zza

  • Lifetime Member
  • Global Moderator
  • *
  • Posts: 21164
  • Location: Texas
  • Always learning
Re: Sourdough starter quantity predictive model
« Reply #146 on: February 25, 2014, 02:18:12 PM »
should i move this to a new thread? i don't want to steal Craig's thread, it's kinda burried here, and i'd like to have somewhere where people can post ideas to build this thing up.
anverc,

I think that would be a good idea. Rather than try to carve out pieces of this thread, you might just start a new thread even if some repetition of old material is needed.

Peter

Offline Adrian

  • Registered User
  • Posts: 17
  • Location: Austria
  • I Love Pizza!
Re: Sourdough starter quantity predictive model
« Reply #147 on: March 28, 2014, 01:24:12 AM »
Hi TXCraig1,

you did an amazing job! In bread making, there are very little breads that are directly (0 step) built. But for pizza it really seems to be the way to go. On the other hand, adding 20% or more of a recently refreshed starter can already be seen as 1 step built.

From my experience, the relation between your numbers seems to be very accurate, I'm amazed. For times under 12 hours I think I just have to apply a constant factor of 0.8 when having a a very active starter. I'm not sure if this holds for longer times (where I don't have much experience). When reviving old starters, it seems to be non linear (spores waking up?); when comparing just one feeding cycle of a recently "captured" starter to an heavily used one, it seems more linear.
This calls for tests. (And me trying to understand the exact model behind you calculation).


I've seen the author where parts of your model is based on his research also is co-author of the ("the") German compendium about sourdough :)
I know, for pizza making it is not an issue, but it'd be great to have the hydration modelled in as well for bread making. If I just had more time ;)

>>> 1/6/13 Here is a link to a spreadsheet that automates the calculation of starter% given multiple fermentation stages: https://docs.google.com/spreadsheet/ccc?key=0AuvMQbzk5INUdGZScWx6U2lYSEtZVkJuVGJiR19NaXc#gid=0 more details here: http://www.pizzamaking.com/forum/index.php/topic,22649.msg230734.html#msg230734


One thing I've noticed: When "calculating" centigrade, G5 has a fixed number. I think it should be:
=(D5-32)*5/9

Thanks a lot for you effort generating this table and making it public!
Adrian

Offline TXCraig1

  • Registered User
  • Posts: 10606
  • Location: Houston, TX
Re: Sourdough starter quantity predictive model
« Reply #148 on: March 29, 2014, 03:05:26 AM »
I fixed the spreadsheet formula. Thanks for pointing it out.

I hope you find it helpful. It's not intended to be the be-all-end-all, but rather to give people a good place to start from which can be quite a daunting challenge for anyone departing from a recipe the first few times. Same with the bakers yeast model here: http://www.pizzamaking.com/forum/index.php?topic=26831.msg285982#msg285982

CL
I love pigs. They convert vegetables into bacon.