Moisture Migration: Why Pizza is Eaten Fresh
On a pizza, 0% water in the dry crust meets over 75% moisture in the hot sauce and mozzarella. Why every minute in the pizza box changes the texture.
No other baked good in the world has such an extreme internal moisture contrast as a freshly baked pizza: the ultra-thin outer crust of the Cornicione and the bottom are completely water-free (0% H₂O, glass-hard-crisp), while just 2 millimeters above lie the boiling hot San Marzano sauce, melted mozzarella, and the moist crumb (> 65% H₂O). Through diffusion and capillary forces (Moisture Migration), this water immediately migrates into the dry crust.
This is precisely why a true Pizza Napoletana in Naples is eaten at the table within 3 minutes – and never driven around the city for 30 minutes in a closed cardboard box! For delivery or take-away pizza, more baked styles like Pinsa Romana or Poolish Pizza with 2% olive oil are much better suited.