Preheat oven to 350°
Cover an 18x13 half sheet pan with parchment paper, then spray and dust with flour. Set aside
In a medium sized bowl, combine flour, spices, cornstarch, baking soda and salt
In the bowl of a stand mixer using whisk attachment, beat the eggs on high until they have about tripled in volume
Add sugar and mix for another 1-2 minutes or until thickened
Add in the flour mixture and mix until just about combined, then finish folding the ingredients together by hand.
Pour into baking pan and bake for 10-12 minutes or until the cake springs back when touched. Do not over bake!
Remove from the oven and immediately turn over onto a clean kitchen towel that has been dusted with powdered sugar (to prevent sticking)
Starting at one end, slowly roll the cake in the towel and tuck in the ends
Move to a cooling rack and allow to cool for four hours