To Make Sweet Potato Puree:

1. Peel and rinse sweet potatoes.  Dice into 1/2-inch cubes.  Place in a medium saucepan and fill the saucepan with enough water to completely cover the potatoes.
2. Bring the potatoes to a boil, then reduce to a low boil for 10 minutes.  When potatoes are fork tender, remove from the heat and smash with a potato ricer or potato masher.  Set potatoes aside for about 30 minutes to cool to room temperature.
3. Measure 425 grams (2 c) of sweet potatoes in a small bowl and set aside.

To Make the Batter:

1. Set your oven to a true 325°F.  An oven thermometer is extremely useful here, since most ovens will not reach 325°F when set to 325°F.  
2. Sift together the all-purpose flour, cinnamon, nutmeg, kosher salt and baking soda in a medium bowl.  Set aside.
3. Add the room temperature butter to the bowl of your stand mixer or a large mixing bowl.  Mix just the butter with your hand or stand mixer until the butter is completely smooth.  Add the brown sugar and cream until the mixture is light and fluffy.
4. Add the eggs, one at a time, mixing each egg until it is completely incorporated in the mixture.  Scrape the sides and bowl as needed to ensure even mixing.
5. Add the vanilla and mix thoroughly.
6. Add half of the flour mixture and mix until just combined.
7. Add all of the sweet potato puree and mix until just combined.
8. Add the second half of the flour mixture and mix until just combined.  Using a rubber spatula, give the sides and bottom of the bowl a final scrape to ensure that the batter is evenly mixed.
9. Prep a 10- or 12-cup bundt pan as you normally would (I use butter and flour to prep pans for this cake) and add the batter to the pan.  Use a rubber spatula to even out the batter, then tap the pan on the countertop several times to remove air bubbles from the batter.
10. Bake for 55-70 minutes in a true 325°F oven, or until an instant-read thermometer reads 212°F-215°F (or a toothpick comes out completely clean).  

To Make the Simple Syrup:

1. Add sugar and water to a small saucepan.  Bring to a boil and reduce to a simmer.  Remove from the heat as soon as the sugar is completely dissolved.
2. Allow the cake to cool in its pan for ten minutes, then invert and place on top of a cooling rack.  Brush simple syrup on the cake and allow to cool completely.

To Make the Vanilla Glaze:

1. Add the confectioner’s sugar, fine sea salt, vanilla extract, and whole milk to a medium mixing bowl.  Using a 9” whisk, stir the ingredients together until all of the confectioner’s sugar is combined.
2. Add 1/2 tbsp of the heavy cream and combine.  If you’d like to thin out the glaze further, add the second 1/2 tbsp and combine.
3. When complete, the glaze should be the consistency of thick honey.
4. Pour over the cake as desired, using either a spoon, spouted measuring cup, or a squeeze bottle.
5. Cake can be stored at room temperature for one day, then refrigerated for up to a week.