Preheat oven to 325 degrees. Heat the cream and mix in molasses. In a separate bowl, cream the butter until light and fluffy. Gradually add the sugar. Add the eggs, one at a time, beating well after each addition. Stir in the cream and molasses mixture, then add the currants. Sift the dry ingredients together and add to the wet mixture. Pour into a greased loaf pan and bake for about 1 hour or until a knife inserted in the middle comes out clean.