Another way.
Cut your pork into small pieces, of the size you would boil at one time; rub all the pieces very well with salt, and lay them on a dresser upon boards made to slope that the brine may run off. After remaining three or four days, wipe them with a dry cloth; have ready a quantity of salt mixed with a small portion of saltpetre: rub each piece well with this mixture, after which cover them all over with salt. Put them into an earthen jar, or large pan, placing the pieces as close together as possible, closing the top of the jar or pan, so as to prevent all external air from getting in; put the shoulder pieces in a pan by themselves. Pork prepared in this manner will keep good a year.