Grape Jam
Remove the grapes from the stems, wash them in a colander, then press the pulp from the skins. Boil the pulp for a few minutes, until it will easily separate from the seeds. Rub it through a sieve, add the skins, and weigh or measure the mixture. Add an equal quantity of sugar, heat it over a moderate fire until it is simmering, stirring it frequently. Do not let it boil hard or the skins will be toughened. Set it in a cooker for three hours or more. Put it into sterilized glasses or jars, cover it with a towel until it is cold, and seal it as directed for apple jelly on page 169.