This Green Tea and Mascarpone Tart incorporates a light green tea flavor both into the crust as well as into cream filling for the tart. The crust is a thin layer of green tea flavored cake with a light spongy texture. This layer is covered with a thick layer of creamy mascarpone mousse that is then covered with a layer of decadent green tea mousse. A refreshing, cool treat, this Green Tea and Mascarpone Tart makes a lovely dessert on a warm spring or summer day.