Roast the sweet potatoes

• Place the whole sweet potatoes on the grill or in a hot oven.
• Roast until they puff up a bit and the skin starts breaking away, with the sugars oozing out.

Melt the butter

• Melt a little butter in a hot pan (no need for the barbecue to be on).

Char the citrus

• Take a mandarin (or an orange, tangerine, or any citrus you like).
• Char it to heat up the juices inside and bring out the sweetness.
• Squeeze the juice into the melted butter.

Build the syrup

• Add about an ounce of Grand Marnier to the butter.
• Add a little maple syrup.
• Squeeze a little more of the citrus juice over the mixture.

Inject the sweet potato

• Inject the syrup inside the sweet potato, doing it very slowly so it doesn't squirt out.
• Pull the injector out and make a little well in the potato.

Finish and serve

• Spoon some more of the sweet buttery syrup over the potato.
• Add a little fresh herb.
• Add a little smoked salt.
• Serve and enjoy.