preheat oven at 375 degrees and make sure rack is placed in the middle of your oven
start by cutting parchment paper to fit your pan. Butter your pan. Place parchment on pan and then butter the parchment-set aside
start whipping egg whites while whipping, add sugar gradually. Whip until stiff peaks form
beat egg yolks until they are light and foamy
add baking soda and salt to flour and mix
add egg yolks to egg whites and fold gently with a soft spatula
add vanilla and flour to egg mix and fold gently with a soft spatula
pour batter into the pan and spread evenly with a spatula
bake for 15 minutes or until its golden and a toothpick inserted in center comes out clean
while cake is baking, place a kitchen towel flat on your counter and sprinkle with confectioners sugar. The towel should be larger than pan
once jelly is out of the oven, let it cool for 5 minutes but no more. Take your pan and invert on top of the towel
immediately roll the cake up starting at the sort end or the shortest width
let it rest at room temp for about an hour or until cool. If not filling right after its cool, place in fridge and let it stay there for about 2 days or until you are ready to fill.