Having procured berries that are fully ripe, put them into a tub or pan with a tap to it, and pour upon them as much boiling water as will just cover them. As soon as the heat will permit the hand to be put into the vessel, bruise them well till all the berries are broken. Then let them stand covered till the berries begin to rise toward the top, which they usually do in three or four days. Then draw off the clear liquor into another vessel, and add to every ten quarts of this liquor four pounds of sugar. Stir it well, and let it stand to work a week or ten days; then filter it through a flannel jelly-bag into a cask. Take now four ounces of isinglass and lay it to steep for twelve hours in one pint of blackberry juice. The next morning boil it over a slow fire for one-half hour with one quart or three pints more juice, and pour it into the cask. When cool, rouse it well, and leave it to settle for a few days, then rack it off into a clean cask, and bung it down.
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Take six large lemons, pare off the rind, and squeeze the juice; steep the rind …