Prepare mixer. Attach the beater blade. Combine flour and salt in the mixing bowl. Turn to low speed. Slowly add water. Let mix until it forms a dough. Change to dough hook. Turn on slow speed and let knead until the dough is very smooth, about 10 minutes. If you’re not using a KitchenAid mixer, start by mixing the flour with the water, stirring with a spatula, until the dough forms. Dust a working surface with flour and transfer the dough onto it. Knead until the surface becomes smooth, about 15 minutes.