Biscotti with Lavender and Orange

2 1/4 cups pastry flour, whole wheat or you can use half white flour 1 teaspoon baking soda 1 teaspoon baking powder 1/2 teaspoon salt 3/4 cup brown sugar,[...]

8 ounces butter unsalted 1 1/2 cups sugar 3 tablespoons orange zest finely grated 2 tablespoons vanilla extract pure vanilla 6 cups flour, all-purpose 1[...]