From milk, too, butter is produced; held as the most delicate
of food among barbarous[1] nations, and one which distinguishes[2]
the wealthy from the multitude at large. It is mostly made
from cows' milk, and hence its name;[3] but the richest butter
is that made from ewes' milk. There is a butter made also
from goats' milk; but previously to making it, the milk should
first be warmed, in winter. In summer it is extracted from
the milk by merely shaking it to and fro in a tall vessel, with
a small orifice at the mouth to admit the air, but otherwise
closely stopped, a little water[4] being added to make it curdle
the sooner. The milk that curdles the most, floats upon the surface; this they remove, and, adding salt to it, give it the name
of "oxygala."[5] They then take the remaining part and boil
it down in pots, and that portion of it which floats on the
surface is butter, a substance of an oily nature. The more[6]
rank it is in smell, the more higthly it is esteemed. When old,
it forms an ingredient in numerous compositions. It is of an
astringent, emollient, repletive, and purgative nature.
1.
2.
3.
4. Hist. Inv. I. 505, Bohn's Ed.
5. oxygala
is attended with difficulties: and I am fully persuaded that his words are
corrupted, though I find no variations marked in MSS. by which this con-
jecture can be supported."—Hist. Inv. I. 505. He suggests another
arrangement of the whole passage, but without improving it, for the difficulty would appear to be totally imaginary; as it is quite clear that by
"oxygala," or "sour milk," Pliny means the thickest part of the curd,
which is first removed and then salted, forming probably a sort of cream
cheese. Though his meaning is clear, he may very possibly give an
erroneous description of the process.
6.