A pistachio cake is a rich yet refreshing dessert that showcases the delicate, nutty flavor of pistachios combined with soft sponge and creamy frosting. This cake features moist sponge layers infused with finely ground pistachios or pistachio paste, giving it a natural green tint and a distinct nutty aroma. It is typically layered with pistachio cream, whipped cream, or buttercream, and may include a light syrup soak to enhance moisture and flavor.