Red Colour.
TO make this colour, boil an ounce of cochineal in
half a pint of water, for about five minutes; then add
half an ounce of cream of tartar, and half an ounce of
pounded allum, and boil the whole on a slow fire about
as long again. In order to know if it is done, dip a pen
into it, write on white paper, and if it shews the colour
clear, it is sufficient. Then take it off the fire, add two
ounces of sugar, and let it settle. Pour it clear off, and
keep it in a bottle well stopped for use.