Light and Fluffy Gas Cake

Whisk the Egg Yolks: In a separate bowl, beat the four egg yolks with 20 g of sugar until the mixture is pale and creamy. This process incorporates air and adds richness to the batter.
Step 4: Beat Egg Whites
Whip Egg Whites: In a clean, dry bowl, beat the four egg whites until stiff peaks form. This step is crucial as it will provide the cake with its light and airy texture.
Step 5: Combine the Mixtures
Fold the Mixtures Together: Gently fold the whipped egg whites into the egg yolk mixture, being careful not to deflate the air you just incorporated. Use a spatula and fold until just combined.
Incorporate the Dry Ingredients: Gradually add the sifted flour mixture to the egg mixture. Continue folding delicately until no dry flour remains visible.
Step 6: Bake the Cake