Pour raisins to a small bowl. Add the rum and let the raisins macerate.
In a food processor, whiz together the sweet potato, pumpkin and coconut milk, until smooth and creamy.
Pour in brown sugar, cinnamon, ginger, nutmeg and clove, and pulse to combine. Then add the aquafaba and cornstarch and blend to combine.
Drain the excess rum from the raisins and stir them in by hand — a food processor will blitz raisins into oblivion.
Pour the filing into the pie shell, smoothing the top with the back of a spoon.
Bake at 350 for 30 minutes or util top is set and center jiggles just a little. Pie will firm up as it cools.
How to save: Cover leftovers with plastic wrap, store in airtight container and refrigerate. If any moisture appears on the surface of the pie, blot gently with a paper towel before serving. Pie keeps refrigerated for several days.