In the bowl of a stand mixer, combine flour, instant yeast, and salt. Mix before adding warm milk, honey, and salted butter. Mix until combined and let rise for 15 minutes to 1 hour.
Melt 1 tablespoon of butter in a skillet and fry sage leaves until crispy. Chop finely and mix with 6 tablespoons of softened butter and 3 tablespoons of honey. Set aside.
Preheat oven to 350°F (175°C) and line a 9x9 inch baking dish with parchment paper.
Punch down the risen dough, divide in half, and roll each half into a 12-inch square. Brush with sage honey butter and cut into strips.
Roll each strip into a coil shape and place seam side down in the baking dish.
Brush tops with the beaten egg yolk mixture and let rise for another 30 minutes.
Bake for 22-25 minutes until golden brown. Brush with remaining honey butter and serve warm.