You first whip 200g soft butter together with 200g sugar, 1/4 teaspoon salt, 3 eggs and the grated zest of two lemons.
Next you mix in 350g flour, half a pack of baking powder and 2.5dl buttermilk adding them bit by bit in turns.
Pour the dough into a cake tin and bake at 180C for 45-50 minutes.
Whilst it was baking I made a frosting with 50g butter, 100g coconut flakes, 4-5 tablespoons lemon juice and some, 150g confectioner's sugar and 1 tablespoon coconut sirup.
Once the cake had cooled down I decorated it with the frosting and some nonpareilles.
Us adults really loved the cake as a whole. The kid only liked the cake and wasn't too keen on the frosting. We ate his and in the end everybody was happy!