Pippin is a farmer and is an obvious ancestor to Lynna City's present-day Bipin, who has roughly the same profession. The difference is that Pippin seems to dislike Gasha Seeds and Nuts, while Bipin greatly endorses and specializes in them.
When Link first talks with Pippin, he complains about Gasha Nuts and gives Link a Gasha Seed, stating that he wants to get rid of it. Afterwards, he tells Link about a soft patch of soil outside his house, but to not plant the seed there.
Sprite of Pippin from Oracle of Ages