Stir yeast with sugar until it liquefies.
Dissolve in about ¼ cup (60 ml) warm water.
In a large bowl mix flour with salt.
Add dissolved yeast, oil and up to ¾ cup warm water.
Mix everything together then knead until smooth and pulls away from the sides of the bowl.
Place the dough in an oiled bowl and cover with plastic wrap.
Let it sit for at least 2 hours at room temperature, to let the dough rise until doubled in size.
Onto a floured surface turn the dough, knead for few seconds and divide into 3 pieces.
Form into balls.
Dust a large plate with flour, place the balls, cover and let rest for another 30 minutes. To use the next day, rub the dough balls lightly with olive oil, cover with plastic and refrigerate overnight.