How To Do ‘Good Fat’ Better

Fat is fashionable now, prompting a deluge of ultra-rich dairy products billed as both healthy and delicious. But can you actually have it all? Here’s your grocery-aisle guide

Jane Black

Feb. 28, 2018 1:11 p.m. ET

FAT-FREE YOGURT is disgusting, an abomination, and I am banning myself from eating it ever again,” read a recent tweet from Roxane Gay, a writer who has spent years contemplating her relationship with food. Within hours, her missive had been liked 4,633 times. It also inspired hundreds of supportive replies, including one agreeing that fat-free yogurt tasted like “chalky paste mixed with sadness.”

How times have changed. Once upon a time, Americans shunned fat, and the food industry answered their calls with fat-free versions...