From the Super Mario Wiki
(Redirected from Grapes)
They first appeared in Yoshi's Story as one of the fruit the Yoshis had to eat to clear a level. During the game, Grapes were the favorite fruit of Light Blue Yoshis and Blue Yoshis. They later appeared in Donkey Kong 64 as the weapon of Lanky Kong. Grapes in Yoshi Touch & Go will each give Yoshi ten eggs when eaten.
Grape later appears in the Donkey Kong game, Donkey Kong Jungle Beat. In the game there is a kingdom called the Grape Kingdom. At the end of every level in the Grape Kingdom was an enormous Grape. This enormous Grape had to be eaten by Donkey Kong so he could go to the next level.