Essence of Pine-apple. From pine-apple oil (butyric ether, butyrate of ethyl), as ESSENCE OF ALMONDS. It forms a delicious flavouring for liqueurs, confectionery, rum, &c. See Ether and Oil (Volatile).
Essence of Quas′sia. Syn. Essentia quassiæ, L. Prep. 1. From quassia (sliced), 11⁄2 oz.; proof spirit, 1 pint; digest 10 days, and filter; 1⁄2 fl. dr. added to 71⁄2 fl. dr. of water, forms the infusion of quassia, of the Ph. L.—Dose, 1⁄2 dr. in water or wine, an hour before a meal, as a stomachic tonic, in dyspepsia, loss of appetite, &c., particularly when complicated with gout; 1 to 2 dr., three or four times daily, as a febrifuge, and antiseptic, in intermittents, putrid fevers, &c.
2. (Brewer’s).—a. From powdered quassia (sprinkled with a little rum) and “foots” (coarse moist sugar or sugar bottoms), equal parts, reduced to the consistence of a semi-fluid extract by the addition of a few spoonfuls of water. For ale.
b. From powdered quassia, 1 part; burnt sugar colouring, 2 parts; well stirred together. For porter and stout. Both are used by fraudulent brewers as substitutes for hops.
Essence of Quin′ine. Syn. Essentia quinæ, L. Prep. From disulphate of quinine, 11⁄2 oz.; rectified spirit, 1⁄2 pint; digest with warmth, gradually dropping in a little dilute sulphuric acid (avoiding excess), and employing constant agitation until the whole is dissolved. 1 fl. dr., added to 7 dr. of proof spirit, forms the ‘TINCTURE OF QUININE’ (Ph. L.). Every fl. dr. contains 8 gr. of disulphate of quinine, or about 10 gr. of the neutral sulphate. If more sulphuric acid is added than is sufficient to dissolve the salt (i. e. convert it into a neutral sulphate), the solution is apt to deposit part of it on keeping, owing to the gradual formation of ether, by the action of the excess of acid on the alcohol.
Essence of Rat′afia. The same as Essence of Almonds. So called from being used to flavour ratafias, noyeau, and other liqueurs.
Essence of Rhu′barb. Syn. Essentia rhei, L. Prep. From rhubarb (in powder) and siliceous sand, of each 5 oz.; proof spirit, 1 pint; by the method of displacement. Every fl. oz. represents the active virtues of 2 dr. of rhubarb.
Essence of Rondele′tia. Prep. 1. Essence (oil) of bergamotte, essence (oil) of lemon, and oil of cloves, of each 1 dr.; otto of roses, 10 drops; rectified spirit, 1 pint.
2. To the last add, of oil of lavender, 1 dr.; neroli, 15 drops. A very fashionable and agreeable perfume.
Essence of Rose′mary. Syn. Essentia rosemarini, L. Prep. From oil of rosemary, as ESSENCE OF ALLSPICE. Used as a perfume; also to make extemporaneous rosemary water.