Caramelised pineapple upside-down cake

This is a great afternoon-tea type of cake and, while it looks fairly dense, is actually light and delightfully moist - and it happens to be gluten-free. The pineapple gets caramelised with jaggery, a Sri Lankan palm sugar, to give it a molasses-like sweetness and the addition of star anise lends an excellent aniseed flavour that matches the fruit well.