Whisk together water, yeast, salt, sugar and oil. Let sit five minutes. Add 5 cups flour and mix with a wooden spoon until dough is very stiff. Tip dough onto floured work surface, lightly flour hands, and knead for five minutes. Shape into a ball, place in a lightly oiled, clean bowl, roll around to coat, and cover with a dish towel. Let rise until doubled (1 to 2 hours depending on air temperature). Tip dough onto floured surface. Shape into 12 fist-size balls. Place balls on a sheet of baking paper, cover, and let rise again for 20 minutes. Cut more baking paper into 10-inch squares. Roll balls into 1/8-inch-thick circles. Firmly pat on your choice of dried herbs, sesame seeds, and sea salt, and stack, separated by squares of baking paper. Heat a dry nonstick or cast-iron skillet over high heat, then reduce to medium-high. Don't use oil or butter in pan. Dry-fry each pita until top begins to form air pockets and bottom begins to brown (5 to 30 seconds per side, depending on stove). Makes 12 6- to 8-inch pitas.