Soak one ounce of marshmallow roots in a little cold water for half an hour; peel off the bark, or skin; cut up the roots into small shavings, and put them into a jug; pour in a pint of boiling water, and allow the infusion to stand for a couple of hours; the decoction must be drunk tepid, and may be sweetened with honey or sugar-candy, and flavoured with orange-flower water, or with orange-juice.
Marshmallow water may be used with good effect in all cases of inveterate coughs, catarrhs, &c.