Mix all the dough ingredients, except cornmeal and olive oil, together and knead for about 5 minutes. If you have a mixer with a dough hook, this would be a great time to use it. Once the dough forms a smooth ball, and is no longer sticking to the sides of the bowl, it is ready to rest.
Grease the inside of large bowl and place the dough into the greased bowl. Cover and let rise in a warm place (I like letting it rest in the oven with the light on to keep it nice and warm) for about 3-4 hours. It should double in size.
Punch down the dough, and divide into 4 equal balls. If you find the dough is a bit too sticky, you can sprinkle with some flour and give it a few kneads to get it smooth again.
Sprinkle your counter with flour, to prevent the dough from sticking. Gently shape each dough ball into about a small 8 to 10"-ish round (depending on how thick or thin you want your crust). I just use my fingers to shape the dough. It is quite soft and pliable, but a rolling pin works too. Allow to rest for 15 minutes before continuing (prep your pizza toppings and preheat the oven or grill in the meantime). Do the same with the remaining dough balls.
Preheat oven (or grill) to 400F. If you have a pizza stone place that in the centre of the oven or grill. If not, don't worry, we will just use the baking sheet instead. Prep your topping ingredients.
Line a large baking sheet with parchment or a silicone mat (recommended). Sprinkle the parchment with semolina or corn meal to coat the bottom. Transfer one dough round onto the parchment.
Brush with olive oil, sprinkle with more semolina/ corn meal on top
If you are using a pizza stone (and don't have a fancy pizza peel to transfer the dough to the stone) carefully slide the silicone mat with pizza dough on top onto your hands, so the silicone mat is sitting on your hands and the dough is on top. Quickly flip the silicone mat onto the pizza stone and remove the silicone mat. It should peel off easily, leaving the dough on the stone. Cook for 5 minutes till starting to turn golden on the bottom (half cooked).
If you are not using a pizza stone, just place the baking sheet with the dough into the centre of the oven. Cook for 5-7 minutes till starting to turn golden on the bottom (half cooked).
Carefully remove the dough (or baking sheet with dough) from the oven. The top will still look a bit raw. Flip over the dough, and top the cooked side with all your toppings, starting with sauce, cheese, then any other ingredients and a bit more cheese. Be careful not to overload it! That will make your pizza go soggy!
Place the pizza back in the oven directly on the stone (or in a baking sheet) and cook for 5 more minutes, till cheese is melted and starting to turn brown.
Allow to cool a few minutes before cutting into the dough. Top with the finishing toppings as you like, and enjoy!