In a large bowl mix together egg, salt, sugar, melted butter and yeast. Add flour and knead until dough is formed. Cover bowl with a clean tea towel and let rise for 1 hour.
Knead dough to remove any air and roll out with a rolling pin on a lightly floured work surface. Sprinkle with dried fruits and nuts and roll it up, then shape into a crescent, sealing the ends. Place on a baking try lined with greaseproof paper. Cover with a tea towel and let proof until at least doubled in size.
Preheat oven to 200 C / Gas 6.
Brush bread with egg yolk and bake till golden brown, about 45 minutes.