
One of my favorite yogurts in Japan is "vanirayouguruto - バニラヨーグルト" or vanilla yogurt in english. It is creamy and really delicious. Really an irresistible yogurt. For the price, it is sold around 200 yen for 3 pots but if go shopping on a sale day, you can find it much cheaper (150 yen).
Its ingredients are powder milk, sugar, eggs, agar and flavors (乳製品、砂糖、卵黄、寒天、香料).
More information in Japanese: http://www.nipponluna.co.jp/products/yog_01/vani.html