Mix the flour, salt and yeast in a large bowl. Make a well in the centre, then add the oil and water, and mix well. If the dough seems a little stiff, add 1-2 tbsp water, mix well then tip onto a lightly floured work surface and knead. Once the dough is satin-smooth, place it in a lightly oiled bowl. Leave to rise for 1 hour until doubled in size or place in the fridge overnight.