Dubai: Grit, grime, grounding. The forces that define a professional kitchen offer a special kind of education. It is fast, physical, and unforgiving. You learn to keep your station in order, to communicate when the room is loud, and to solve a problem before it reaches the customer.Stephen Flawith started there.Before becoming the CEO and founder of Yolk Brands, a $50 million umbrella company behind Pickl, Bonbird and Southpour, he was washing …