Beer expert explains how pouring beer the wrong way can upset your stomach
http://www.businessinsider.com/youve...ght-way-2017-8

A 'beer sommelier' explains how pouring a beer the wrong way can give you a stomach ache
How do you pour a beer? Turns out this popular pouring method - that results in little to no foam - is completely wrong. And can actually cause stomach issues! Max Bakker, a Master Cicerone (think a sommelier for beer) and High-End Educator at Anheuser-Busch InBev shows the correct technique.
Watch Video Here