Lemon Zest Sponge Cake

Ingredients

• 100 g butter
• 100 g sugar
• 4 egg yolks
• 3 tablespoons milk
• lemon zest
• 4 egg whites
• 250 g flour
• 1 packet baking powder

Method

1. 1 Beat butter and sugar until fluffy. Add egg yolks, milk, and lemon zest, mixing well.
2. 2 Whip egg whites to stiff peaks. Fold into the butter mixture along with the flour.
3. 3 Sprinkle baking powder over the batter and gently fold it in until just combined.
4. 4 Pour into a buttered pan and bake in a hot oven (425°F) for 30 minutes.