This Is The Way You're Actually Supposed To Hold Your Coffee Cup, According To Science
By Abdullah Wali — / Death Wish Coffee Blog
No one wants to lose precious coffee because of something as silly as a spill. Oddly enough, however, coffee mugs are not the ideal shape and proportions to avoid this catastrophe. In fact, holding a cup by the handle is unbalanced and will inevitably lead to some spillage if your cup is too full. This is where science comes in. According to the Smithsonian's researchers, the ideal way to hold your coffee cup is actually to "claw hand" it. I know, doesn't seem practical, especially when the coffee is hot, but if you think about it, it makes plenty of sense. By holding the cup from the top, you're keeping it completely balanced and therefore, free from spillage.
Another thought (and this comes from years of waitressing experience), hold your handle toward the bottom and keep your eyes on where you're going. If you want to do it with proper "etiquette" then loop your index through the handle and keep your thumb on top. Or if you just want to just drink your coffee, hold the handle and chug. To each their own.