This delicious dish is a great alternative to your run-of-the-mill mashed potatoes. It’s a creamy medley of russets, sweet potatoes, Murasaki (Japanese sweet potato), and butternut squash.
Japanese sweet potatoes have a purple skin and pale-flesh, which is subtler and drier and tastes unmistakably of chestnut.
Sweet Potatoes vs. Yams
Yams and sweet potatoes are botanically distinct species, but are often confused because they have been mislabeled in American supermarkets. What most Americans commonly think is a yam (“Garnet” or “Jewel”) is actually a red-skinned, orange-fleshed variety of a sweet potato! Yams are not grown in the United States. They’re native to Africa and Asia so you’ll most likely find them in your local ethnic market. To find a true yam look for a starchy tuber that has an almost black bark-like skin and white, purple or reddish flesh.