Whick together wet ingredients: yogurt, egg, sugar, oil
Sift dry ingredients together: flour, salt, baking powder and baking soda then fold dry ingredients into the wet ingredients with the help of a Rubber spatula. Mix just until combined
Add orange zest in
Bake for 30 min or until skewer inserted in the middle of the cake comes out clean
Make the syrup by boiling sugar and orange juice then once it gets syrupy, mix in Prosecco and Aperol
Gently apply syrup on top of the cake. Wait until syrup sinks in then apply another layers. Be careful not to make the cake super wet though
Cut oranges into segments and make the freshly squeezed orange juice
Pour Prosecco and Aperol on top of orange segments and ideally let them infuse for a few hours
Soak gelatine sheets into cold water
Bring orange juice to boil, then remove saucepan from heat, squeeze excess water from gelatine sheets and stir them into the orange juice
Pour orange juice over the orange & Aperol mixture, stir so they well mixed together. Let it slightly thicken in the fridge
Assembling
Assemble the Mousse cake ring (adjustable in size) and set it to the size of the cake that is 15cm / 6inch. For a neat looking, smooth side surface use Acetate cake collar within the mousse ring. Alternatively use a spring form tin
Pour the Orange Aperol topping over the cake when the topping starts to thicken but not fully thickened yet. Smooth the top with an Offset spatula
Chill cake in the fridge for 3-4 hours for the topping to set