Method
1. Add active dried yeast, sugar and bread flour to a clean stand mixer bowl
2. Whisk together
3. Prepare a clean medium bowl
4. Add egg to the medium bowl
5. Whisk briefly and set aside
6. Add milk to a clean saucepan
7. Heat until lukewarm
8. Transfer milk mixture to eggs
9. Whisk on low speed
10. Mix eggs into dough gradually
11. Mix until elastic - 8 min
12. Add unsalted butter to the dough
13. Mix until smooth - 5 min
14. Transfer dough to medium bowl
15. Let rise until doubled - 1 hr 30 min
16. Turn out on lightly-floured surface
17. Flatten into a large rectangle
18. Prepare a clean loaf pan
19. Add dark chocolate and ground cinnamon to a clean small bowl
20. Mix together
21. Spread chocolate mixture with spoon
22. Roll stand mixer bowl gently
23. Transfer content of stand mixer bowl to loaf pan
24. Leave rest
25. Pre-heat oven - 190°C
26. Add egg and milk to a clean small bowl
27. Mix together
28. Pour glaze into loaf pan
29. Sprinkle with sea salt
30. Bake - 30 min, 190°C
31. Transfer onto cooling rack