Citrus maxima
The pomelo, pummelo, or in scientific terms Citrus maxima or Citrus grandis, is the largest citrus fruit from the family Rutaceae and the principal ancestor of the grapefruit. It is a natural, i.e., non-hybrid, citrus fruit, native to Southeast Asia. Similar in taste to a sweet grapefruit, the pomelo is commonly consumed and used for festive occasions throughout Southeast Asia. Like the grapefruit, the pomelo has the potential for drug interactions.