Preheat the oven to 450°F (230°C). Bring the water, seasoned with 1 teaspoon (5 ml) of the salt, to a boil in a large saucepan. Add the potatoes. Boil for 7 to 8 minutes, or until fork tender. 
Remove the potatoes with a slotted spoon and transfer to a mixing bowl. Add the butter, the remaining 1/4 teaspoon (1 ml) salt, the cinnamon, nutmeg, Natural Brown, pepper, pecans and syrup and mash.
Pour into a casserole. Sprinkle the top with the Plantation Raw sugar and the marshmallows. Bake for about 20 minutes, or until the marshmallows melt and turn light Natural Brown. Serve hot.