Barley Sugar.—(No. 90.)
Clarify, as No. 475, three pounds of refined sugar; boil it to the degree of cracked (which may be ascertained by dipping a spoon into the sugar, and then instantly into cold water, and if it appears brittle, it is boiled enough); squeeze in a small tea-spoonful of the juice, and four drops of essence of lemon, and let it boil up once or twice, and set it by a few minutes: have ready a marble slab, or smooth stone, rubbed over with sweet oil; pour over the sugar; cut it into long stripes with a large pair of scissors; twist it a little, and when cold, keep it from the air in tin boxes or canisters.
N.B. A few drops of essence of ginger, instead of lemon, will make what is called ginger barley sugar.