Note
For the pistachio cream
1. Place the pistachios in the food processor and mix to create a thin paste, slowly incorporating the 150 millilitres of water.
2. Using a mortar and pestle, crush a handful of pistachios for sprinkling over the pizza post-bake (you can also use a meat mallet, or the bottom of a small glass bottle – just be gentle!).
For the pizza
1. Preheat your oven for 20 minutes, bringing the baking stone to a temperature between 450 °C to 500 °C (850 °F to 950 °F).
2. Place your dough ball on a lightly-floured work surface.
3. Spread on ⅙ of the pistachio cream, ⅙ of the pecorino (about 16 grams) and ⅙ of the mozzarella (about 83 grams) evenly around the base; drizzle with a swirl of olive oil.

4. Launch your pizza into the oven, turning it 90 degrees with a turning peel every 30 seconds, until the crust has risen and browned, and cheese has melted, around 1 to 2 minutes.
5. Remove the pizza from the oven and place onto a serving plate or platter; tear 2 to 3 slices of prosciutto (about 25 grams), and place on top of the pizza (Simon likes to form these into rose shapes), before adding a pinch of the lemon zest and crushed pistachios for garnish.

6. Slice into 4 and serve.
7. Repeat these steps with the remaining pizzas.