Persian Love Cake

Name: Persian Love Cake
Prep time: 10 min
Cook time: 1 h 15 min
Total time: 1 h 15 min
Yield: 12 slices
Ingredients: 60 g pistachio nuts, unsalted, shelled; ½ tsp ground cardamom; 250 g blanched almonds; 1 lemon; 150 g light brown sugar; 200 g unsalted butter; 4 medium eggs; 100 g plain flour; 1 tsp baking powder; 2 tsp rose water; 1 pinch fine sea salt; 40 g lemon juice; 30 g light brown sugar; 200 g mascarpone; 40 g icing sugar; ½ tsp rose water