Pennsylvania Dutch Peanut Brittle

1 cup molasses
2 tablespoons butter
1 cup brown sugar, firmly packed
1 tablespoon vinegar
1 cup shelled peanuts
1 teaspoon baking soda, dissolved in a little cold water

Remove all skins from the peanuts.

Cook molasses, sugar, butter and vinegar until a little of the syrup is brittle when dropped in cold water. Remove from heat, and stir in peanuts and baking soda.