Old Fashioned Apple Butter - cooking recipe

Ingredients

16 c. thick apple pulp, unsweetened
1 c. vinegar
8 c. sugar
4 tsp. cinnamon

Preparation

Cook quartered apples in water until soft.
Put through a food mill or sieve and measure to make 16 cups.
Put in a large kettle and add other ingredients.
Cook slowly, stirring often, about 1 1/2 hours.
Butter should turn a deep reddish brown and thicken into a smooth mass.
Pour into sterilized jars and seal.