The rose generally chosen for this purpose, is the common pale (single or double) rose, but the white rose is best of all. Gather the flowers in fine weather, two hours after sunrise; take out the calix, and separate the leaves, pound them in a marble mortar to a paste, and leave them five or six hours in the mortar; then put them into a large close cloth, and let two persons wring it with all their strength. Having by this operation obtained four pounds of juice, infuse in it an equal weight of fresh rose-leaves for twenty-four hours; at the end of that time put the whole into the alembic, which place in a Band-bath, and distil it according to rule. (See Distilling). When you have collected about an ounce of the water, unlute the receiver, and if that which issues from the still is as odoriferous as that which proceeded first, continue the operation; but if not, collect it into another vessel, as this second water is only single, and must be kept separate from the first, which is the Essential Water. Should the second water have an unpleasant smell (caused by the application of too much heat), expose it to the sun for a few days, covered only by a sheet of paper. The utmost care is necessary in distilling thus and all other odoriferous substances. A still more powerful essence than the above may be procured by the following method: - Gather as many roses as will afford thirty pounds of leaves, pound these with four pounds of salt; when pounded, place the paste in a vessel in layers with salt between each, press them closely, cork them tight, leave the vessel twelve days, and then distil as usual.
Put four pounds of rose-leaves into a pan, with three quarts of river water, and leave it four-and-twenty hours; then put it into a metal alembic, and distil from it as much odoriferous water as you can, being sure to stop the moment you observe the phlegm. Take off the alembic, throw away its contents, and rinse it out well; after this, fill it to two-thirds with fresh-gathered rose-leaves, on which pour the above drawn rose-water; distil this, and when you have procured as much good rose-water as it will yield, let the fire go out. gradually.