Sweet Potato Butter

adapted from Putting Up

4 c sweet potatoes, cooked, peeled, and mashed (3 lbs sweet potatoes)
3/4 c apple juice
1 c light brown sugar
1 c sugar
1/2 c orange juice
1/2 c lemon juice
1/4 c cider vinegar
2 tsp. cinnamon
1 tsp. vanilla
1 tsp. salt

Cook the potatoes in the oven or microwave until soft, peel them and puree them in a food processor with the apple juice until smooth. Place in a pot with remaining ingredients and bring to a low boil for 10 minutes. Process in a hot water bath for 20 minutes. (see Canning Basics) Makes 3 pints.