Complex sentence: A "puits d'amour" is made up of layers of staggered rings of puff pastry placed on top of a pastry circle, an egg yolk can be used to help the dough rings to stick together.
Split into simpler sentences: A "puits d'amour" is made up of layers of staggered rings of puff pastry placed on top of a pastry circle. An egg yolk can be used to help the dough rings to stick together.