Pineapple cakes, or in Chinese 鳳梨酥(feng-li-su), are these buttery, flaky pastries that are stuffed with a sweet pineapple jam. Honestly, I have never bothered to make them before, since it’s so easy to purchase them, and almost every Taiwanese household has them just lying around to snack on! However, I had leftover pink pineapple that…