Use 500 g of mozzarella, and use less cheese than in USA.
The balls have to be 400 g the bottom and 250 g the top.
First fermentation in the fridge about 12 hours.
Second fermentation at room temperature for a couple of hours more.
Bake at 220ºC during 35-40 minutes, and it is recommended to take it out of the mold and give it 5 final minutes without it so that it toasts well underneath.
Control so that it doesn't burn on top. If so, cover it with aluminum foil.