Prep: Preheat oven to 350°F. Line a 12x17" baking tray with parchment paper and set aside.
Flour mixture: In a small mixing bowl, stir together cake flour, cinnamon, ginger, nutmeg, allspice, cloves, and baking powder. Set aside.
Separate eggs: Carefully separate the egg whites and egg yolks into two separate large mixing bowls. Set the yolks aside.
Egg white meringue: To the egg whites, add the cream of tartar. Use an electric hand mixer to beat the egg whites until they become frothy like cappuccino foam. Sprinkle in 100g of granulated sugar, one spoonful at a time, mixing well in between each addition. Once all the sugar has been added, continue beating on medium-high speed until it becomes stiff peaks. Set aside.
Egg yolk mixture: To the egg yolks, add the remaining 50g of sugar. Use the same hand mixer to mix until combined. Add the milk, oil, and vanilla extract. Mix on low speed until combined. Use a fine mesh sieve to sift the flour mixture into the egg yolk mixture. Mix until combined.
Combine: Add about ⅓ of the egg white meringue to the egg yolk mixture. Fold together with a spatula until combined. Add the rest of the meringue and fold together until no streaks remain and the batter is fluffy, making sure to scrape the bottom of the bowl where the batter tends to settle.
Fill pan: Pour the batter into your lined baking tray. Use an offset spatula to spread the batter into the corners of the tray and into an even layer.
Bake: Bake the cake sheet for about 12-15 minutes or until the edges are lightly golden brown and the cake sheet is puffy.
Cool: Let the cake cool in the tray for only about 5 minutes. While it's still warm, run an offset spatula around the edges of the cake to release it from the tray.
Release cake sheet: Place a sheet of parchment paper on top of the tray, grip the tray and parchment paper with both hands and flip it upside down. Peel the parchment paper off the cake sheet. Place another sheet of parchment paper on top and flip it over again so that the nicer looking side of the cake sheet will be on the outside of the roll cake.
Pre-roll cake sheet: Starting from one of the short ends, roll up the cake sheet with the parchment paper and let it cool completely in this rolled up shape.