"As a barista at the Cafe Grumpy in Grand Central Terminal, where droves of commuters pass through at all hours of the day, he is not only on the front lines of providing New Yorkers with their daily…

"To come up with this list of the best coffee scales, we first consulted Caroline Bell, a coffee expert and the founder of Cafe Grumpy in New York. With her professional insights and buying tips in mi…