2 tsp white coconut-flavoured rum (optional)
2 unwaxed limes, zest only, grated
2 limes, juice only
4 passion fruit, pulp and seeds scooped out
2 passion fruit, pulp and seeds scraped out
2 tbsp coconut cream
250g/9oz rice flour
4 tsp gluten-free baking powder
350g/12oz caster sugar
100驳/3陆辞锄 caster sugar
100驳/3陆辞锄 desiccated coconut
200g/7oz icing sugar
350g/12oz unsalted butter, softened
150g/5陆oz unsalted butter, softened
6 large free-range eggs