After her triumphant, record-breaking year, Adele faced surgery—and silence. With her voice back, she opens up to Jonathan van Meter about fame, family, and what the future holds.

Every singer knows the List: citrus, vinegar, mint, dairy, spicy or fried foods, fizzy drinks, caffeine, cigarettes, and alcohol. These are the vocal cords’ enemies. And when one has a five-octave contralto as dynamic, award-winning, money­making, and record-breaking as Adele Laurie Blue Adkins does, one figures out how to avoid these things. Some require less effort than others. Mint? Vinegar? Feh. Cigarettes?...