Berry's Pastry Shop Lemon Biscotti

Source: Berry's Pastry Shop, Antioch, California

3 cups flour
2 1/2 tablespoons baking powder
1/8 tablespoon salt
2/3 cup softened butter
1 cup granulated sugar
3 large eggs, whipped (plus 1 egg mixed with a teaspoon water for egg wash)
1/4 tablespoon lemon extract zest from 2 lemons

Heat oven to 375 degrees F. Combine all ingredients and mix until smooth.

Divide dough in half and roll into two logs about 12-inches long. Flatten top. Transfer logs to cookie sheets, brush with egg wash and bake for 20 minutes.

Let logs cool slightly, then carefully transfer to a cutting board and cut crosswise into cookies about 1/2-inch thick. Transfer individual cookies back to cookie sheet, standing them on edge. Bake again for about 5 minutes or until just dry.