This light cheesecake flavored with Japanese yuzu was a hit with my family. Hope it can be a hit with yours too! Yuzu fruit can be found in Japanese supermarkets; if they don't carry the fruit, then the markets usually carry the bottled juice of Yuzu. You can substitute the yuzu with lime, but it will be a very different pie. Since marscapone and sour cream usually come in 8 oz packages, you can double this recipe so that you don't have to measure out half of the marscapone/sour cream.