Combine the ingredients to form the dough. In a large mixing bowl, whisk together the flour, remaining sugar, and salt. Make a well in the center of the dry mixture and pour in the frothy yeast mixture, eggs, egg yolks, vanilla extract, and orange zest.
Mix until the ingredients come together into a sticky dough. Gradually add softened butter, one tablespoon at a time, ensuring each addition is fully incorporated. Knead the dough for about ten minutes, either by hand or using a stand mixer with a dough hook attachment, until it becomes smooth and elastic. Avoid adding too much flour, as this can make the bread dense. Cover the dough with a clean kitchen towel and let it rise in a warm spot for one to two hours, or until it has doubled in size.
Paris, the City of Light, is one of the most beloved travel destinations in the world. Known for its timeless elegance, rich history, and artistic charm, Paris is filled with iconic landmarks, cultural treasures, and scenic spots.