First, make a sponge by dissolving the yeast in ⅔ cup/150 ml tepid water in a large bowl and then adding the flour. Thoroughly combine, using a wooden spoon. Cover with a cloth and let stand in a warm place until the sponge doubles in volume, about 30 to 45 minutes.
In a large bowl, combine the flour, salt, eggs, and the egg white. Combine the sugar and milk well and add to the flour an