List of ingredients...
Preheat oven to 160C fan-forced. Position the oven rack in the middle of the oven. Grease and line a 20cm round spring form cake tin with baking paper. In a small bowl, sift and whisk together the almond meal, baking powder and salt.
Separate eggs with yolks in small bowl and egg whites into large bowl.
Beat egg whites on medium speed until soft peaks form and it's firm and glossy (see Notes).
In a large bowl, beat the butter and sugar together until light and creamy.
Add the yolks to the butter and sugar mixture and beat well to combine.
Add the vanilla bean paste, lemon zest and juice and beat well to combine.
Add half the almond meal mixture to the butter, sugar and egg mixture and lightly fold through until just combined.
Add the other half of the almond meal mixture and repeat.
Add a third of the egg whites to the almond meal mixture and fold through lightly until just combined (see Notes).
Repeat this two more times until all the egg white is incorporated through.
Pour mixture into lined baking tin and bake for 38-42min.
Check at the 38min mark to see if it is cooked correctly. It should be golden on top and a skewer comes out mostly clean.
Remove from oven and allow to cool for 30min before removing from the cake tin. Place on cooling rack to cool completely.