What's the difference - starter vs poolish?

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What's the difference between a sourdough starter and a sourdough poolish?


Appreciate any input.  :)

somgeeek

None, but that's not typical usage.

 

"Sourdough Starter" usually refers to a preferment that only contains wild yeast and bacteria (sourdough).

"Poolish" usually refers to a preferment that only contains commercial yeast.

 

OK, then what's the difference between a Poolish and a Biga?

'Starter' is a generic term to describe prefermented flour.  It can be either wild yeasted (i.e. sourdough:  levain, chef, and various other terms) or can be made with commercial yeast. 

Starters made with commercial yeast typically fall into two groups:  poolish type(liquid/ batter-like consistency) or biga type (lower hydration; typically the consistency of regular bread dough).  Yeast addition is usually minimal so that the rise takes 6-18 hours, depending on method used.  Wild yeasted starters can also be similarly hydrated.....in other words, liquid type or very dense with minimal water.

fthec