Boil batata in unsalted water until it's fork-tender (about 20 min). Remove from the water and cool to room temperature. Crush a bit with a potato masher or fork.
2. Blend
Mix sweet potatoes, coconut milk, milk, cinnamon, clove, and ⅓ cup of sugar and blend until it is very smooth.
3. Cook
Pour into a saucepan and add the raisins and salt. Heat over medium-low heat, stirring constantly to avoid burning the bottom. Once it has thickened to yogurt-like consistency, taste sugar, and add more to taste if you find it necessary (sweetness was fine to my taste). Remove from the heat.
4. Chill
Chill: Pour into a metal bowl and stir until it has cooled to room temperature. Chill.
5. Serve
Pour into individual bowls, sprinkle with coconut flakes, and serve.
Video
Notes
Can you make it with orange sweet potato? Yes, the flavor and consistency will be different, but if that's what you have, give it a try and see if you like it.