Combine yeast, sugar and water in a large bowl and let sit 2-3 minutes.
Add salt, olive oil and 2 cups of flour.
Mix with spoon until dough becomes shaggy.
Turn out dough onto lightly floured kneading surface and slowly knead more flour into the dough until it becomes elastic.
Place dough into a greased bowl.
Cover.
Let rise until it has doubled in size. (Approx. 1 hr.)