All out of nutmeg? The same algorithms that predicts your friends on Facebook can also figure out ingredient substitutions for your pumpkin pie this Thanksgiving. Courtesy of Lada Adamic. hide caption

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Courtesy of Lada Adamic.

Classic tuna noodle casserole is an often maligned yet much beloved hot dish. iStockphoto.com hide caption

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iStockphoto.com

Tuna Noodle Casserole, A Hot Dish In Need Of An Update, Gets One

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The reporter's mother, Nawal Elbager, of Khartoum, Sudan, shows off her falafel. Rashad Baba/Courtesy Nawal Elbager hide caption

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Rashad Baba/Courtesy Nawal Elbager

When It Comes To Falafel, The Flavors Of Home Can Vary

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Boiling lemon rinds for President Harding's lemon pineapple fruit punch, called a squall. Taji Marie/NPR hide caption

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Taji Marie/NPR

Presidential Foods And What They Say About Our Leaders

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Leah Lizarondo. with her hands covered in plastic bags, gathers stinging nettles. Larkin Page-Jacobs for NPR hide caption

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Larkin Page-Jacobs for NPR

Taming Those Wild, Stinging Backyard Greens Into Dinner

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Variations On Chocolate Cake: Google's new Recipe View is designed to help cooks sift through recipes on the web. Here, the results for a search for Molten Chocolate Cake. NPR hide caption

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NPR