1.
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Place potatoes in a large pot and cover with water. Heat until water reaches 160 degrees (this will be less than a simmer…a thermometer is handy) then remove from heat, cover and let sit one hour. |
2.
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Preheat oven to 400 degrees. Drain the potatoes and place in a large bowl. Toss gently with the 2 tablespoons olive oil then sprinkle with the coriander, cumin, chili powder and salt and toss again. |
3.
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Arrange sweet potatoes in a single layer on a rimmed baking sheet and roast until golden and the edges and just tender, about 20 minutes. |
4.
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Meanwhile, make the dressing: Put the chipotle chili, garlic and sweet chili sauce in a blender and blend until smooth. Add the lime juice and blend again. Add the olive oil and pulse until emulsified. |
5.
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When the potatoes are done, remove from oven and let cool slightly. Place them in a large bowl with the corn and the black beans. Add scallions and cilantro and toss gently. Add enough dressing to moisten all the ingredients and toss again. |