Sprinkle yeast in a small bowl. Pour lukewarm water in bowl. Add honey and milk and sit to agitate. Set bowl aside until frothy.
Put flour in the bowl of a stand mixer. Add brown sugar and salt and stir to combine. Make a well in the centre, add eggs and yolk. Pour oil into well. Whisk wet ingredients together.
Pour in your yeast mixture and stir everything together until a dough forms.
Use the dough hook attachment of the stand mixer to knead the dough on low until dough starts to look smooth. Add more flour if needed.
Turn onto a floured work surface and knead.
Oil a bowl and put dough inside. Cover with a tea towel and let side until doubled in size, about two hours.
Punch the dough to get rid of any air bubbles.
Turn the dough out onto a floured work surface and break it into three balls of equal size. Roll each ball into a thick rope.
Braid into a long braid. Press together the strands of the braid at each end to secure.
Transfer the braid to a baking sheet lined with parchment paper.
Cover with a damp tea towel and let sit to rise again.
Preheat oven to 350F (180C).
Crack egg for egg wash into a small bowl. Add water and whisk together.
Brush the bread with the egg wash.
Top with a sprinkling of coarse salt.
Bake in the oven for 30-35 minutes until nicely browned.
