saleratus

If saleratus is used in bread where no acidity is present, it is a medicine; or, if you please, a poison both to the stomach and intestines.

From Vegetable Diet: As Sanctioned by Medical Men, and by Experience in All Ages Including a System of Vegetable Cookery by Alcott, William A. (William Andrus)

Some people use only a tea spoonful of saleratus, to a pint of molasses, but it is much better with more, appearing in point of lightness like sponge cake.

From The New England Cook Book, or Young Housekeeper's Guide Being a Collection of the Most Valuable Receipts; Embracing all the Various Branches of Cookery, and Written in a Minute and Methodical Manner by Anonymous

At Philadelphia in 1876 Vienna bread was made known, and the native article, sodden with saleratus, which up to that time had desolated the country, 360 began to disappear.

From The Teacher Essays and Addresses on Education by Palmer, Alice Freeman

I might also mention several other additions, which, like saleratus, it is becoming fashionable to make.

From Vegetable Diet: As Sanctioned by Medical Men, and by Experience in All Ages Including a System of Vegetable Cookery by Alcott, William A. (William Andrus)

Thousands of wagon loads of pure saleratus and pearlash could be got here.

From Journal of a Trip to California by the Overland Route Across the Plains in 1850-51 by E. S. (Edward Stuart) Russell