Mom thinks this is it. If any of you try it please let me know if you like it

JAM CAKE
1 and 1/2 c. shortening
2 and 1/2 c. brown sugar
4 eggs
5 c. flour
2 c. seedless blackberry jam
1 and 1/2 c. buttermilk
2 tsp. soda (dissolved in buttermilk)
1 tsp. cinnamon
1 tsp. cloves
1 tsp. allspice
Cream sugar and butter. Add eggs; beat. Add flour alternately with the buttermilk. Mix well. Bake at 325 for one hour or until done.
CARAMEL FROSTING
1 c. brown sugar
1/2 cup margarine
1/4 c. milk
2 c. powdered sugar
Combine brown sugar and margarine. Cook for 2 min. Add milk; let stand till lukewarm. Add powdered sugar; beat until smooth. Frost cakes.