Chef Daniele Uditi holds a piece of focaccia nel ruoto at the 40th annual International Pizza Expo in Las Vegas. A slice of spianata focaccia with crushed crema di nduja, San Marzano tomatoes, herbs, mozzarella di bufala, anchovies and fresh basil from Daniele Uditi at the 40th annual International Pizza Expo in Las Vegas. A slice of spianata focaccia made …