Sink your teeth into today's top stories from around the globe.

• The humble sweet potato is taking root as an excellent source of vitamin A in parts of malnourished Africa. - NPR

• All that glitters isn't edible gold: Just because it's the world's most expensive turkey and cheese sandwich, doesn't mean it's the best. - Guardian

• Steve Holt(!) takes a look at the age-old question: "If restaurant week sucks for both those who prepare the food and eat it, then what keeps it going?" - The Atlantic Cities

• The perplexing connection of Jell-O and Mormonism. - Slate

• 50 great states, 12 great wines, $20 or less. - New York Times