If you’ve been around a traditional Vietnamese household during Tet, you have probably noticed the presence of gargantuan, child-sized, dark green watermelons on the altar. These behemoths are both intimidating and delicious; that is, if one remembers to cut them up during the holiday and not leave them out for months like my mom did one year. However, not many know that the origin story behind this juicy berry – yes, watermelons are, indeed, berries – is rooted in a fascinating folk tale that takes place in ancient Vietnam during the days of the Hung Kings.