Scrape seeds from the vanilla pod and mix with a little sugar.
Grate the lemon zest and squeeze the juice.
Grate marzipan and mix together with sugar, vanilla, butter, and lemon zest.
Whisk in one egg at a time and whisk well between each egg.
Mix flour, salt, and baking powder and sift into the dough.
Fold the dough gently with lemon juice.
Put into a greased springform pan with baking paper at the bottom and bake for 25-30 minutes at 190 degrees Celsius (374 degrees Fahrenheit).
Let the cake cool completely before decorating.
Grate the lemon zest and squeeze the juice.
Mix a thick icing with powdered sugar and lemon juice and add some of the zest.
Put icing on the cake and top with chopped pistachios and a little lemon zest!
Enjoy!
