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One of the reasons we love latkes so much is because the browned crispy edges of potatoes are so delicious. Even when they are just browned and not particularly crispy, as they are here, they are irresistible. It helps to use a heavy nonstick pan for these so that you can cook the potatoes long enough and on high enough heat to get the browned edges, without losing those edges to the surface of the pan, where they will undoubtedly stick once they have absorbed the oil. I have been using a potato called simply “yellow potatoes” for this; they are slightly starchy, just a little less so than a Yukon gold or a fingerling, both of which will work just as well. Blanch the kale before you cook the potatoes, cut it into slivers, and add to the potatoes once they are tender. I season the mix with nigella seeds, one of my favorite spices; you can also add something with a kick, like cayenne or chile powder, if you want to pump up the heat.