You know, they didn't always put a plastic baby in a king cake. Here's why they did.

Many historians believe that the king cake has much older origins, beginning with the Roman winter festival Saturnalia.

During this winter solstice celebration, Saturn—the Roman god of agriculture—would be honored by using the gains of the season’s harvest to make ceremonial cakes. And instead of a miniature baby, one singular fava bean would be placed inside. And whosoever should find the bean would be named “king of the day.”

Which is a bit odd, considering in ancient tradition fava beans were regarded as omens of death. But other sources note that favas were considered magic and even used for voting. Certainly makes that infamous Hannibal line take on a whole new context.

Fast forward to the rise of Christianity, the ritual adopted a more religious context in France.

In Roman Catholic tradition, the Epiphany denotes the day when the three kings first saw the baby Jesus. The king cake came to represent this day, even taking on the name of Epiphany cake.

So it stands to reason that if this sweet treat became associated with the celebration of baby Jesus, then of course the plastic baby was originally intended for such representation, right?

Wrong.

The baby wouldn’t make its appearance until the mid-1900s, and it was thanks to a clever salesman in New Orleans.

By then, the king cake had already been a prominent Mardi Gras item.

The owner of one of the 20th century’s most famous bakeries, Donald Entringer of McKenzie’s, was approached by a salesman carrying a surplus of tiny porcelain dolls from France, according to food expert Poppy Tooker in an interview with NPR.

"He had a big overrun on them, and so he said to Entringer, 'How about using these in a king cake,’” Tooker told NPR.

Though a simple case of supply-and-demand isn’t terribly exciting, the way this simple concept has advanced to become the dish’s golden standard is pretty remarkable.

Plus, the fact that this Louisiana tradition is steeped in history of bawdy hedonism and sacred spiritualism, all with a healthy dose of capitalizing on the combo … I mean if that’s not New Orleans in a nutshell, I don’t know what is.

It’s not just beans and babies either.

Pecans, jeweled rings, gold coins and small charms have also been used. Some bakeries have even made their own customized trinkets. Others have started avoiding placing them inside altogether, attempting to thwart potential lawsuits. Baking with plastic is a tad more frowned upon these days.

Though most of us are familiar with the NOLA style of the king cake, other countries have their own versions.

There’s the French galette des rois, which is less colorful but oh-so-flaky, topped with a golden paper crown.

Also there’s Spanish rosca de reyes, flavored with lots of orange and topped with dried fruit.

There’s even a Greek version, vasilopita, that’s very similar to coffee cake. Not that you couldn’t have any of these cakes for breakfast, but there’s an excuse baked right into this one.

No matter what style you try, or whether or not you find that plastic baby, the king cake—along with its festive history and captivating lore—is definitely worth celebrating.