Lemon, Passionfruit and Ginger Syrup Cake Preparation time: 10 minutes Cooking time: 45 minutes Serves: 12 150g unsalted butter, softened 400g caster sugar finely grated zest and juice of 6 lemons 6cm piece ginger, finely grated 2 tsp natural vanilla extract 4 eggs 3 cups self-raising flour ¾ cup buttermilk or Ayran (drinking yoghurt) pulp…