Preheat oven to 230 C / Gas 8. In a medium bowl, dissolve yeast and sugar in warm water. Let stand until creamy, about 10 minutes.
Stir in flour, salt and oil. Beat until smooth. Let rest for 5 minutes.
Turn dough out onto a lightly floured surface and pat or roll into a round base. Transfer base to a lightly greased pizza pan dusted with fine polenta or cornmeal. Spread with desired toppings and bake in preheated oven for 15 to 20 minutes, or until golden brown. Let baked pizza cool for 5 minutes before serving.