Mountain Grape Catsup

5 pints grapes, washed
4 cups brown sugar, packed
1 pint vinegar
2 tablespoons powdered allspice
2 tablespoons cinnamon
2 tablespoons cloves
1 teaspoon mace
3/4 teaspoon cayenne
1 teaspoon salt

In an enamel pot put the washed grapes, cook slowly for about 25 minutes.
Put through a colander.
Mix with brown sugar, vinegar and spices.
Boil until thick, about 45 minutes.
Stir frequently.
Pour into jars.