Sweet potatoes have a slightly lower GI than white potatoes due to their higher fiber content. A boiled white potato has a GI of 71, while a boiled sweet potato has a GI of 66.

Using a mandoline, thinly slice potatoes lengthwise into 1/16-inch-thick slices. Add sweet potatoes to cream mixture; toss gently to coat. Layer potato slices in bottom of prepared pan, slightly ...

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