Place sugar, salt, shortening and boiling water in a large bowl, stir until sugar and shortening dissolve. Cool to lukewarm. Add yeast mixture.
Add 1/2 cup flour and beat until smooth. Add remaining flour or enough to make dough just barely firm enough to handle.
Knead until smooth on a lightly floured board. Divide in half. Knead each piece into a smooth ball. Flatten each ball on to a lightly greased round or rectangular pizza pan. Press out to spread the dough around the pan, creating a slight rim round the edge. Let rise for 15 minutes.
Preheat the oven to 500ºF.
Brush the dough lightly with olive oil. Add your favorite toppings (see our suggested list below).
Bake for 8-12 minutes. The edges will be a nice golden brown when it's done.
Makes one large size pizza crust (exact dimensions depend on how thick or thin you roll out the dough.