Obviously the vegetable embodiment of our Lord. It's blessing first graced South America but eventually found it's people in the realm of Ireland. Like the Holy Spirit, the potato may become angry and envoke plagues (i.e. Potato Famine). The holiness of this crop is the reason that upon ingestion the consumer feels jubilant. The crop has also been known to cure disease.
"How did you get rid of your herpes?"
"I ate a potato"