According to the New York Times, 50 Kaló is one of the best pizza in Italy!
I can confirm it now that I have tried it.
It is delicate and light! I could have eaten a second pizza. They use high quality ingredients and in fact, you can taste the difference.
The restaurant is located on Piazza Sannazaro, 201, Naples (https://www.google.it/search?q=50+kalo&ie=UTF-8&oe=UTF-8&hl=en-it&client=safari#). Recommend to go there early because there will be the line but the service is amazingly fast.
Here is what we selected from the menu:
Mozzarella “Bufala”, tomatoes and salami.
Mozzarella “bufala” and prosciutto