01 - Combine dried fruit and mixed peel in a bowl. Pour hot tea over the mixture, cover, and soak for 1 hour. For extra plumpness, soak overnight.
02 - Preheat oven to 340°F. Grease and line a 2 lb loaf tin with parchment paper.
03 - Sift flour, baking powder, cinnamon, mixed spice, and salt into a large bowl. Stir in brown sugar until evenly distributed.
04 - Whisk egg with melted butter and orange zest (if using) in a separate bowl until well blended.
05 - Pour the wet mixture and soaked fruit with any remaining tea into the dry ingredients. Fold gently until just combined—do not overmix.
06 - Spoon batter into the prepared loaf tin and smooth the top with a spatula for even baking.
07 - Bake for 55–65 minutes until a skewer inserted in the center comes out clean. If top browns too quickly, tent with foil.
08 - Let cool in the tin for 10 minutes, then turn out onto a wire rack to cool completely before slicing.
09 - Slice and serve plain or generously buttered. Best enjoyed slightly warmed.