Lightly butter 2 x 20cm/8in springform cake tins and line with baking ... or pipe over the coconut buttercream. Place the other cake layer on top. Scatter the passion fruit seeds in the middle ...

Bottles from a long list of brands line the shelves ... you can try infusing it with fruit to see if it boosts the taste. There are other ways to use coconut water as well, such as mixing it ...