Grate sweet potatoes and yam and set aside.
Dissolve Grace Coconut Milk Powder in warm water, melt Grace Hello Margarine.
Combine grated sweet potatoes,yam, soaked raisins, Grace Cornmeal, flour and dark sugar in a large pudding pan or a bowl.
In another bowl,combine the Grace Coconut Milk, melted Grace Hello Margarine, mixed spice ,vanilla, nutmeg, cinnamon powder, salt, wine and rum and mix well.
Add the liquid ingredients to the grated potato mixture and stir well.
Scrape the mixture in a greased dutch pot lined with banana leaf, pudding pan,or a baking tin and place over a three stone wood fire. Place a flat baking sheet with lit charcoals on top of the baking container.
Bake for about 1 hour and 15 minutes.
METHOD NOTE :Sweet Potato Pone may be baked in a pre-heated oven at 180⁰C/ 350⁰ F for 1 hour nd 15 minutes.