For the estimated 15 million people nationwide who live with dysphagia, or a swallowing disorder, mealtime can be the most difficult part of the day: Bland, beige, mush, reminiscent of baby food, or worse. Beyond the need to secure adequate nutrition, people with swallowing disorders may long to taste their favorite meals and join the rest of the family around the dinner table. Enter Diane Wolff, a writer who made it her mission to reimagine the dysphagia diet—with bold flavors and colors—after her mother’s life-changing stroke. Nearly two decades later, the “Queen of Purée,” as...