In a large bowl, combine flour, salt, yeast, water, and oil in a large bowl. Mix with your hands until no dry flour remains. Cover with cling film and leave for at least 8 hours to rise.

Pour oil into two pans and divide the dough between them. Using the flat of your hand push out into the edges of the pan as best you can. Cover with cling film and leave for a further two hours.

Preheat the oven to 200C. Lift the dough up to let air bubbles escape. Top with tomato sauce, cheese and toppings as required and bake for 15 minutes or until the bottom is completely crisp.