Preheat the oven to 325 degrees F. and grease and flour a bundt (tube) pan and set aside.
In a small mixing bowl whisk together the flour, salt, baking powder, baking soda, nutmeg, cinnamon, and set aside.
In a large mixing bowl cream together (with an electric mixer) the butter and sugar. Add the mashed sweet potato and mix until the batter is light and fluffy. Add in the eggs one at a time, mixing well after each one.
Slowly add the flour mixture until well blended and then add the vanilla and lemon extracts.
Pour the sweet potato pound cake batter into the prepared bundt pan and bake at 325 degrees F. for 1 hour and 10 minutes or until the cake is golden brown and a cake tester comes out clean. Once the cake is finished remove from the oven and allow the cake to sit in the pan on a cooling rack for at least 10 minutes and then invert and remove the cake onto the rack and allow it to cool completely.
Store the cake in an airtight container or if storing for long-term it may be placed in the freezer.
Notes
Optional- if you would like a light glaze on the top of the sweet potato pound cake, mix 1 cup of powdered sugar with 3 Tablespoons of orange or lemon juice and drizzle on top of the cake and serve.