Knead all the ingredients, except for the egg yolk and milk for egg wash, into a dough and form a log.

Wrap in foil and let rest for an hour.

Roll out the dough on a floured work surface to an 18×16 in (45×40 cm) rectangle.

Cut in half the long way.

Cut the two strips into triangles.

Brush with melted butter and roll loosely into crescents (from the wide side to the point).

Place the crescents on a buttered baking sheet.

Mix egg yolks and milk and brush the crescents with the mixture.

Let the crescents rise for about half an hour at 86 °F (30 °C).

Preheat the oven to 375 °F (190 °C) and bake for about 25 minutes.