early 14c., "leavened bread," also "leaven" (late 14c.), from sour (adj.) + dough. Meaning "fermented dough" is from 1868. The meaning "Arctic prospector or pioneer" is from 1898 Yukon gold rush, from the practice of saving a lump of fermented dough as leaven for raising bread baked during the winter.
实用例句
1. To make sourdough you need a starter.
制作酵头时需要酵母.
来自互联网
2. The foie gras, sourdough and olive Pugliese breads from San Francisco did not arrive until Tuesday.
