Haven't actually made this myself but have eaten it and its really good.
1c. vegetable oil
2c. cooked, mashed sweet potatoes
2/3 c. water
3 1/2 c. all-purpose flour
1 tsp. salt
1/2 tsp. baking powder
2 tsp. baking soda
1 1/2 tsp. cinnamon
1 tsp. cloves
1 1/2 tsp. allspice
1 1/2 c. raisins
1 1/2 c. pecans, chopped
You wil need eight wide-mouth pint jars and eight lids with rings. Wash and rinse jars. Do not use any other size. Let dry. Grease jars with shortening. About 15 minutes before bread is ready to bake, place lids and rings in boiling water. Do not boil, but leave in hot water until ready to use.
In a large bowl with electric mixer, blend sugar and oil. Add eggs. Beat well and add sweet potatoes and water. Sift together flour, salt, baking powder, soda, cinnamon, cloves and allspice. Add to sweet potato mixture. Mix on low speed until well mixed. Stir in raisins and pecans.
Pour one cup, plus one tablespoon batter, into each far. Wipe off any batter that might be on the edge of the jar. Place jars on cookie sheet. Bake in preheated 325 degree oven for 45 to 55 minutes. When done, remove jars from oven immediately, one at a time.
If bread has risen above the jar's edge, cut off excess. Wipe edge of jar and seal with scalded lid and ring. Let jars set until they seal. You will hear them pop. Turn upside down and cool. Bread will come loose from the sides and bottom. To serve, slice and serve as is, or with whipped topping.