Dissolve yeast in warm water in a large mixing bowl; let stand 5 minutes. Add flour and 3/4 teaspoon of salt to yeast mixture; stir with a a mixer equipped with dough hooks or use a wooden spoon until smooth. Turn dough out onto a lightly floured surface; knead a few minutes, until flour is fully incorporated. Shape dough into a ball; spray inside of a bowl with cooking spray and place the dough ball inside it. Seal bowl with plastic wrap and allow to rest at room temperature for an hour.