sourdough

[ souuh r-doh, sou-er- ]

/ ˈsaʊərˌdoʊ, ˈsaʊ ər- /

leaven, especially fermented dough retained from one baking and used, rather than fresh yeast, to start the next.

a prospector or pioneer, especially in Alaska or Canada.

any longtime resident, especially in Alaska or Canada.

leavened with sourdough: sourdough bread.

Origin of sourdough

Middle English word dating back to 1275–1325; see origin at sour, dough

They are vinous, herbaceous, and reminiscent of sourdough yeast starter.

Wine Snobs, There’s a Beer for You |Jordan Salcito |April 5, 2014 |DAILY BEAST
Choosing one wine to go with candied yams and sourdough stuffing is challenging.

The Best Thanksgiving Wines |Sophie Menin |November 19, 2010 |DAILY BEAST
Anyhow, whole-wheat pancakes made with sourdough for the ninth "morning" running was too damned much!

Let'em Breathe Space |Lester del Rey
His obsession made him certain in his own mind that the redoubtable Sourdough could certainly kill any dog.

Jan |A. J. Dawson

It is somewhat in the vein of "Sourdough" Service, the Yukon bard.

Ballads of a Bohemian |Robert W. Service
I'll bring along the baby an' a batch o' sourdough bread, an' fix to stay a hull week.

The Gold Girl |James B. Hendryx
The real old time veteran and sourdough is a model of neatness and order.

The Book of Camp-Lore and Woodcraft |Dan Beard

sourdough

/ (ˈsaʊəˌdəʊ) /

dialect (of bread) made with fermented dough used as a leaven

(in Western US, Canada, and Alaska) an old-time prospector or pioneer