01 - Combine the dried fruit and mixed peel in a heatproof bowl. Pour the hot tea over the fruit, cover the bowl, and let it soak for 1 hour. For extra plumpness, you can soak overnight in the refrigerator.
02 - Preheat your oven to 340°F. Grease a 2 pound loaf tin thoroughly with butter and line the bottom with parchment paper to prevent sticking.
03 - Sift the flour, baking powder, cinnamon, mixed spice, and salt into a large mixing bowl. Add the brown sugar and whisk together until evenly distributed.
04 - In a separate bowl, whisk the egg with the melted butter and orange zest (if using) until well combined.
05 - Pour the wet mixture and the soaked fruit along with any remaining tea liquid into the dry ingredients. Using a spatula or wooden spoon, fold everything together gently just until the flour is incorporated. Do not overmix.
06 - Transfer the batter to your prepared loaf tin, using the spatula to spread it evenly. Smooth the top surface with the back of a spoon.
07 - Place the tin in the center of the oven and bake for 55 to 65 minutes. The bread is done when a skewer or toothpick inserted into the center comes out clean.
08 - Let the bread cool in the tin for 10 minutes before carefully turning it out onto a wire rack. Allow it to cool completely before slicing.
09 - Slice the barmbrack and serve plain or spread generously with butter. It pairs perfectly with a cup of tea.