Food for thought: Since the city began compelling restaurant chains to post calorie information, coffee drinkers have proved likelier to get their java from a Starbucks than from the Dunkin’ Donuts down the street.

A Stanford University study found drink revenues up 5 percent at Starbucks stores within 100 yards of Dunkin’ Donuts since health officials made it mandatory that menus include nutritional data.

The fatty truth behind Chocolate Frosted Coffee Rolls and Jelly Filled Munchkins has scared some customers away from the doughnut chain and into the guilt-free world of Caramel Brulee Frappuccinos, researchers say.

“If they’re not gonna buy a doughnut anymore, they say, ‘I’ll just go to Starbucks,’ ” said study co-author Phillip Leslie.

But one Dunkin’ Donuts official called the study “absolutely unfounded” — and others insist it isn’t worth a hill of beans.