Lemon Cordial

Cut six fresh lemons in thin slices, put them into a quart and a half of milk, boil it until the whey is very clear, then pass it through a sieve; put to this whey, one and a half quarts of French brandy, and three pounds of powdered loaf sugar; stir it till the sugar is dissolved--let it stand to refine, and bottle it; pare some of the yellow rind of the lemons very thin, and put a little in each bottle.