Edinburgh, Jan. 6
... ?? 3, jal. 6. The following manner of curing butter is pra&ifed in various dairies in Scotland, which gives their butter a great fuperiority over that of other dairies: 6 Take two parts of the beft common fait, and one part fugar, and one part faltpetre, beat them up together, and blend them com- pletely. Take one ounce of this compofition for every pound of butter work it well into the mafs, ...