Blood Orange Cake
Preheat the oven.
Mix the dry ingredients, the flour, salt, baking powder and soda and the sugar in a bowl.
Mix the wet ones in another, bigger mixing bowl, the eggs, oil, elderflower syrup and the sour cream.
Slowly add the dry ingredient to the wet ingredients with constant stirring.
Grease the baking tin and pour the cake mixture in it.
Bake the cake on middle heat for 25-30 minutes.
Elderflower Filling & Frosting
Mix the sugar and the mascarpone.
Whip the whipping cream with the whip it.
Slowly add the whipped cream to the mascarpone. Stir it with a spatula or a whisk, so you don't break the cream.
Add the blood orange extract/simple syrup, then taste it. (If you use the simple syrup, be careful, not to water down the frosting by adding too much!)
When the cake baked, let it cool.
Cut the cake in half, then fill it with the frosting. Leave some to cover the outside of the cake too.