Prepare the nonstick bundt cake pan by generously spraying it with a nonstick spray. ( Refer to the post above for tips to avoid the cake from sticking to a bundt pan)
Preheat oven to 300° F / 150 C. Adjust the oven rack such that, the top of the cake tin will be at the center of the oven (not too close to the upper part of the oven).
In a large mixing bowl, beat together sugar and butter until it is fluffy and light in colour.
Start adding eggs one by one. Once the egg is completely incorporated, add the next one. Keep scraping the bottom of the bowl with a spatula in between, for the mix to be even.
Once all the eggs are done, add sour cream, all the spice powders, baking powder, salt and orange zest. Mix well.
With the mixer on low speed, add flour in three batches. Scarp the bottom of the bowl in between to remove any dry patches of flour.
Fold in the soaked dry fruits and nuts into the batter using a spatula. The batter is going to be thick.
Using a large ice cream scoop ( for easier transfer of thick batter), fill half of the prepared bundt pan with batter, level it with a spatula. Transfer rest of the batter to the cake pan. Level the top with a spatula.
Bake for 1 hour 15 minutes or until a wooden pick inserted into the center comes out clean. Let cool in the pans for 10 minutes, then remove the cakes and place on a wire rack.
Generously brush the tops and sides of each cake with rum or brandy. Cool for atleast 5-6 hours before slicing.
To store, wrap the cakes tightly in plastic wrap for 6 to 8 weeks. Keep brushing the cake with rum/brandy every week. Or, wrap in cheesecloth soaked with rum or brandy and keep in an airtight container for several weeks to age.