In a large bowl, place your dried mixed fruit, hot tea and sugar. Once the tea cools, cover and leave the fruit to soak up the tea and sugar over night.
The next day, preheat your oven to 180°c (160°c fan-assisted ovens, Gas Mark 4 or 350°F). Line a 2lb loaf tin with greaseproof paper and set aside.
Sift the flour and mixed spice into the bowl of soaked mixed fruit. Add the [beaten] egg and mix everything together until well combined.
Pour the mixture into your lined loaf tin, spreading to the corners. Bake in your pre-heated oven for about 1 hour, until dry on top and a skewer inserted comes out clean.
Once cool, remove from the tin but keep the greaseproof paper lining on. Bara Brith is best enjoyed after a couple of days kept in an air tight container, sliced with a spread of butter/margarine.