How to make traditional Jamaican Sweet Potato Pudding

How to make traditional Jamaican Sweet Potato Pudding

2lbs sweet potatoes ( red skin & white inside)
1/2 lbs yellow yam
2 large coconuts
1 cup coconut shavings
1 1/2 cup all purpose flour
1 cup sugar
1/2 cup cornmeal
1/2 grated nutmeg
2 tsp. cinamon powder
2 tsp vanilla
margarine for greasing baking pan.
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