Sweet Potato Fly is a fermented sweet potato drink that will remind you of ginger ale. The drink is sweet and refreshing.
Mix 1 cup of water with the mace. Bring the mixture to a boil. Remove the mixture from the heat and allow it to cool.
Using a coarse grater, grate the sweet potatoes. Rinse the sweet potatoes under cold water to remove the starch. Volume wise this will look like a lot of sweet potato once it is grated.
In a large bowl or crockpot, combine the grated sweet potatoes, the rest of the water, sugar, whey, the juice from the limes and the grated peel of the limes, the cinnamon, nutmeg, ginger, and eggshell.
Add the boiled mace.
Stir the mixture gently. Cover the mixture and store in a warm place for three days.
Strain the mixture with a coarse sieve to remove the sweet potato. Then, strain again with a fine mesh sieve lined with a double layer of cheesecloth. Place the strained sweet potato fly in jars and refrigerate. Shake or stir before serving. Serve cold. The sweet potato fly will last about 1 week in the refrigerator.