What is the difference between yams and sweet potatoes?

While often used interchangeably, yams and sweet potatoes are not the same thing. Here's a breakdown of the key differences:

Yams:

* Botanical Classification: Belong to the genus Dioscorea, a vine that produces starchy tubers.

* Origin: Native to Africa and Asia.

* Appearance: Have rough, brown skin and a starchy, white flesh.

* Flavor: Mild and starchy, similar to potatoes.

* Availability: Less common in North America, often imported from tropical regions.

Sweet Potatoes:

* Botanical Classification: Belong to the genus Ipomoea, which also includes morning glories.

* Origin: Native to the Americas.

* Appearance: Have smooth, reddish-brown or orange skin and a moist, sweet, orange flesh.

* Flavor: Sweet, with a slight hint of caramel.

* Availability: Widely available in North America, especially in the fall and winter.

Key Differences:

* Botanical Family: Yams and sweet potatoes are from different plant families.

* Appearance: Yams have rough skin and white flesh, while sweet potatoes have smooth skin and orange flesh.

* Flavor: Yams are starchy and mild, while sweet potatoes are sweet and have a caramel-like flavor.

The Misnomer:

The confusion stems from the fact that the term "yam" is often used incorrectly in North America to refer to sweet potatoes. This is likely due to the introduction of the sweet potato to the continent by explorers who mistook it for the true yam.

In Conclusion:

While both yams and sweet potatoes are delicious and versatile root vegetables, they are distinct from one another. Be sure to check the label to know what you're buying!