In medium bowl, whisk together flour and salt. Add butter and mix into flour with a pastry blender or your fingers until crumbly. In a small bowl, stir together maple syrup and 1/4 cup plus 1 teaspoon cold water. Add water mixture to flour mixture and toss together with a fork until dough begins to come together. Gather dough into a ball; divide in 4 equal pieces. Flatten each into a disc, wrap in plastic and refrigerate 2 hours.