-- Patrick Mahomes poured himself a large black coffee, opened a sugar packet and poured it in. Patrick Mahomes is out to convince people he's an active part of his budding coffee business. Courtesy Cameron GottINSIDE A SWANKY rooftop restaurant in Kansas City, Mahomes arrives on a hot summer evening to host retail executives at an event for his cold brew. "Obviously all of the quarterbacks drank coffee," Mahomes said. Mahomes' current business interests perhaps provide a guide for what his post-playing career might look like.