Pain au Chocolat Ingredients Croissant dough: 1/4 cup warm water 1 tablespoon active dry yeast (Not instant or rapid rise) 4 cups unbleached all-purpose flour 1/4 cup sugar 1 tablespoon salt 1/4 cup butter, at room temperature 1 cup cold milk 1 1/2 cups cold unsalted butter egg glaze: 1 egg 2 tablespoons butter