Preheat oven to 350 degrees F. Line a large baking sheet with parchment paper.
Mix the flour, salt, baking powder and spices together in a bowl and set aside.
In a mixing bowl, beat the eggs until foamy. Add sugar and beat for about 30 seconds, then beat in the oil, molasses and extract.
Add the flour mixture and stir until blended.
With damp hands, shape the dough into a log about 11 inches long and 1 inch high.
Bake on center rack for 25 minutes. Let cool on baking sheet for about 10 minutes, then transfer to a cutting board and cut into about 16 to 18 slices.
Reduce oven heat to 300 degrees F.
Stand biscotti bake on the baking sheet and bake at 300 degrees F for about 25 minutes. Let cool.