The recipe calls for 2 cups of flour. There are a couple different flour combinations you might explore. The original: you can use unbleached all-purpose flour – 2 cups / 9 oz / 260g. Alternatively, I use equal parts APF and spelt flour which translates to 1 cup / 4.5 oz/ 130g APF + 1 cup / 4 oz / 115g spelt flour. I might try a whole wheat pastry flour version next time – using 2/3 wpp + 1/3 apf, the first time around – to see how that goes.