01 - Combine dried fruit and hot black tea in a bowl. Cover and let soak for at least 1 hour, or overnight for optimal results, until fruit is plump and tender.
02 - Preheat oven to 340°F. Grease a 2-pound loaf tin and line with parchment paper.
03 - Whisk sugar, egg, and melted butter in a large mixing bowl until smooth and well combined.
04 - Add soaked fruit along with any remaining tea liquid to the wet mixture. Stir to distribute evenly.
05 - Sift flour, baking powder, cinnamon, nutmeg, and salt into the bowl. Add orange zest if desired. Gently fold until just combined—take care not to overmix.
06 - Transfer batter to prepared loaf tin. Smooth the top with a spatula for even baking.
07 - Bake for 55 to 65 minutes, or until a wooden skewer inserted into the center comes out clean.
08 - Allow cake to rest in the tin for 10 minutes, then carefully transfer to a wire rack to cool completely.
09 - Dust with powdered sugar if desired. Slice and serve plain or spread with butter. Also excellent toasted.