Boil in an iron saucepan, one tea-cup full of pearl barley, with one
quart of cold water, pour off the water when it boils, and add another
quart, let it simmer very gently for three hours over or near a slow
fire, stirring it frequently with a wooden spoon, strain it, and
sweeten with white sugar, add the juice of a lemon, a little white
wine, and a quarter of an ounce of isinglass dissolved in a little
water, and pour it into a mould. This is a very nourishing jelly.