Wilhelmina Rawson, Australian enquiry book of household and general information (1894)
“ Household Soap—No. 1.—Slack six pounds of fresh quicklime in a tub, using just enough water to make it crumble perfectly. Dissolve six pounds of washing soda in four gallons of warm water. Add the slacked lime and the soda solution together and stir well, adding four gallons of boiling water and keep on stirring till mixed, then let it settle. Pour off the clear lye and you have home-made caustic soda. Put this lye into a clean kerosene tin over a gentle fire and add to it 12 pounds of clarified grease, stirring continually, then dust in, a little at a time, four ounces of powdered borax. ”
