Ube Cake - unusual purple chiffon cake made with ube (Filipino name for purple yam/sweet potato) and coconut.
Pour the batter into 3 9-inch cake pans lined with baking paper. Bake Ube Cake at 175 C (350 F) for about 30 minutes.
Immediately after baking, take cakes out of their pans, turn them upside down on a wire rack and let cool.
ICING: Open the can of chilled coconut milk and scoop out the cream. Mix it cream with vanilla extract and a sugar until fluffy. Mix in the mascarpone cheese. Use this mixture as both a filling and frosting for the Ube Cake.
Optional step: decorate the cake with purple cake crumbs and coconut cookies.