Dictionary.net

This is an analogous preparation to anthrakokali; soot being used in the place of coal. It is employed in the same diseases. What might be regarded as a weak solution of fuligokali has been used for many years in Philadelphia, under the names medical lye, soot tea, alkaline solution, dyspeptic lye, and Physick's lye tea. It is made by mixing a quart of hickory ashes; half a pint of soot; and a gallon of boiling water; allowing the mixture to stand for twenty-four hours, and decanting.