In a stand mixer, beat the caster sugar, olive oil and eggs until light and fluffy, about 2–3 minutes on high speed.
1 cup caster sugar, 3/4 cup extra virgin olive oil, 3 eggs
Turn the mixer speed down to low and add the cocoa mixture while beating. Then, while mixing, add the flour mixture a little at a time until well combined (stop halfway and use a spatula to scrap down the sides).
1/2 cup cocoa powder, 1/2 cup boiling water, 1 tablespoon vanilla extract, 1 1/3 cups plain flour , 1/2 teaspoon baking powder, 1/2 teaspoon sea salt
Pour the batter into the cake tin and bake for 30–35 minutes until a skewer comes out clean.
For the cardamom cream: Beat the cream until soft peaks just start to form (about 3 minutes). Add the caster sugar and ground cardamom and beat for 30 seconds to combine.