Cooking Instructions
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Step 1
Preheat oven at 350 degrees F (180 degrees C).
Step 2
Line 10x10 inch baking tray with parchment paper.
Step 3
Separate the
Eggs (4)
yolks and whites and set aside.
Step 4
In a large bowl, mix egg yolks,
Vanilla Extract (5 mL)
,
Caster Sugar (70 g)
,
Corn Oil (30 g)
, and
Milk (30 g)
together with a hand whisk, mix well and add in
Cake Flour (70 g)
, mix well again. Divide the egg yolk batter into two portions and blend the
Unsweetened Cocoa Powder (6 g)
with
Water (15 mL)
mixture into one of the egg yolk batters.
Step 5
For the meringue, whisk the egg whites until to foamy and add
Caster Sugar (50 g)
in 3-4 batches. Continue to whisk egg whites until glossy and peaks form.
Step 6
Gently fold half of the meringue to the egg yolk batter and cocoa batter with a rubber spatula.
Step 7
Pour the plain batter on lined pan. Then gently pour cocoa batter on top of the plain batter and spread evenly with a spatula.
Step 8
Draw lines closely for the entire pan top and down to and from with a ladle handle or use your index finger, then repeat the lines vertically.
Step 9
Bake in preheated oven 350 degrees F (180 degrees C) for about 15 to 17 minutes.
Step 10
Remove baking baking paper immediately after baked and leave cake to cool on wire rack with a clean parchment paper below, chocolate side at the bottom.
Step 11
Trim off the sides of the cake and spread filling, then roll up the cake and chill in the refrigerator for a few hours before slicing.
