Sift together both flours, baking soda, baking powder & salt. Set aside.
Mix together the milk and molasses until well blended.
Spread the jam between the layers and sprinkle a little icing sugar on to to garnish if you like.
One Note I would like to make is about using the Purity Jam. It's been a quite a long time since I purchased this product and I remember it as being a firmer set jam. This was definitely on the soft set side. It turned out fine, but it did tend to seep out the sides after a little time. If you can, make your own jam to a firmer set, or purchase a red berry jam that is firm set with pectin for a cake that will stand up better. The nutritional information provided is automatically calculated by third party software and is meant as a guideline only. Exact accuracy is not guaranteed. For recipes where all ingredients may not be used entirely, such as those with coatings on meats, or with sauces or dressings for example, calorie & nutritional values per serving will likely be somewhat lower than indicated.