Berkshire Fruit Cake

• 6 eggs well (beaten)
• 1 citron thinly (cut)
• 750 gr raisins
• 500 gr currants
• 425 gr cake flour sifted
• 180 ml molasses (light)
• 230 gr butter
• 200 gr sugar
• 60 ml grape juice
• 5 gr baking powder