Put in an earthen pot on the hot range three pints of cold water; when boiling, immediately add four and a half ounces of freshly ground coffee, and as soon as the coffee has been added, put the pot on the corner of the stove to rest for three minutes. Have a piece of hot, red (very red) charcoal the size of a small banana, plunge it into the coffee. (If no charcoal at hand, a piece of red stove-coal will answer). Let rest again for three minutes; then you will see a heavy foam appearing at the surface of the coffee, thoroughly skim it off with a skimmer. Then carefully and gently pour it into a hot coffee-pot, and send to the table with six small, hot demi-tasses; accompanied with six ponies of old Renauldt cognac.

I would recommend that, after the scum has been removed, the coffee should be handled as gently as possible, so that all undesirable elements will remain at the bottom.