The writer and television personality talks about her new show, Taste the Nation. Lakshmi, an award-winning author who previously hosted “Top Chef,” talks about using her show to broaden the definition of “American food” — as an antidote to xenophobia and ahistoric notions of who “Americans” are. | Get full Chronicle access: sfchronicle.com/pod Learn more about your ad choices. Visit megaphone.fm/adchoices