Peel and boil pumpkin until it is cooked-through. Cool to room temperature.
In the blender vase mix pumpkin, salt, coconut milk, coconut cream, cinnamon powder, clove powder, ginger powder, cornstarch and Kahlúa. Blend for 5 minutes at full speed.
Pour the mixture into a 2 quart pot, and add the allspice berries.
Reheat over medium heat stirring constantly for 5 minutes. Remove from the heat.
Pass the mixture through the finest sieve you have, the finer the better. Get rid of solids.