DCHP-1 Online
salt-rising 
n. sourdough (def. 1a) kept as a leavening agent for future batches of baking.
See also: sourdough (def. 1a)
- 1833 (1846) [The wife of a Canadian settler] must know how to manufacture hop-rising or salt-rising for leavening her bread.
- 1852 Butter and bread she is too modest to say much about, but she does venture a complaint about . . . salt-rising being rather uncertain, and not to be depended upon for the making of the other.
- 1951 Course the cook made salt-risin bread, but he couldn't get nobody to touch it after he got good on pancakes.
- 1833 (1846) [The wife of a Canadian settler] must know how to manufacture hop-rising or salt-rising for leavening her bread.