Mix the flour, salt, sugar and yeast in a bowl.
Make a hole in the centre and add the water and olive oil.
Mix with a spoon or spatula from the centre and slowly adding the flour from the sides.
When the spoon isn't helping you mix anymore, switch to your hands. In the end you'll see you will have to take the mix off the bowl and knead it a bit on the table to mix it properly.
If it's sticking to your hands add a bit of flour at a time until it isn't. Don't over-do it though because if it goes too dry then it won't be able to rise as nicely.
Knead by hand 30min or on an electric mixer for 15min on full speed with the hook attachment. At this point you could freeze the dough for up to a month.
Now we need to let it proof. If you're making one medium pizza then make a ball from the dough and put it on a clean surface or tray with semolina so it doesn't stick. On top we put a damp cloth so it doesn't dry out. If you're making 2 20cm pizzas like mine then divide the dough and shape it before proofing. If your dough was frozen it needs to come to room temperature before you start timing the proofing process. In total it needs to proof at least 2 hours and a maximum of 4.
On the last 30min of proofing turn on your oven to its maximum temperature, broiler included. If you're scared it would be to high or don't know what the maximum temperature is, set it at 250°C/480°F. Inside the oven must be your skillet / pizza stone / oven tray preheating as well. Place it really close to the top of the oven.