passion de l'amour

4 passionfruit
4 lemons 
185 g butter, softened
1 cup sugar
3 eggs
2/3 cup milk
2 1/2 cups self-raising flour
1 1/2 cups icing sugar
3 tbsp lemon juice
1 tsp butter, softened

1. Preheat oven to 180 degrees celcius (160 if using a fan-forced oven).  Grease/line  22 cm tin.  
2. Squeeze lemons for their juice and grate the rind.  Strain passionfruit pulp so you have the juice and the seeds.  You need 1/2 cup of juice (mixture of passionfruit and lemon). 
3. Place butter, lemon rind, juices sugar, eggs, milk and flour in a bowl.  Beat on low speed in cake mixer until combined, then increase speed to high and beat for 2-3 minutes until pale.  Stir in passionfruit seeds.  
4. Pour into prepared tin and bake for 50 minutes or until skewer comes out clean.  
5. Stand in tin for 10 minutes then turn out onto cooling rack.  Once cooled, ice and serve.  A little extra grated lemon rind would look good as a decoration, or some more passionfruit pulp.