Mix the flour, salt and water together and knead for five minutes. Let sit for 10 minutes, then divide in half. Roll out one half until thin and then butter. fold the sides toward the center, then butter again. Fold the dough in half lengthwise, then butter again. Keep going until you have a five-inch square. Then butter the top and cover with plastic wrap. Refrigerate for 15 minutes. Repeat with second ball of dough.