Fill a medium pot with water. Heat on stove over high heat until water begins to boil. Reduce heat slightly to maintain a low boil.
While water heats, peel potatoes and cut into chunks.
Add potatoes to the pot. Allow to cook at a low boil for about 15 minutes or until potatoes are tender and easily pieced with a fork.
While the potatoes cook, peel and mince garlic and add to pan with ½ tbsp olive oil. Allow garlic to cook over low/medium heat until it becomes fragrant. Set aside.
Strain the potatoes and add to a large blender.
Add all ingredients to the food processor/blender including the garlic. Liquid needed may vary based on how big your sweet potatoes are. You can start by adding half of the coconut milk and adding more as needed to get desired consistency.
Blender the potatoes until smooth. Using a spatula, scrap the sides to make sure everything is blended and incorporated.
If using a blender you will want to use one that is high powdered and has blades that go all the way up the length of the pitcher.