William Dietz

William Dietz has spent twenty years in tea, including nearly a decade leading R&D and sourcing at DAVIDsTEA, where he developed blends across loose leaf, bagged, ready-to-drink, powder, and extract formats. He became the Specialty Tea Institute’s youngest graduate at 17 and later taught its courses.

Today he is co-founder of BDH Consultants, where he advises tea and botanical brands on sourcing and product development and works with café and retail operators to build profitable beverage programs. He writes Steep Insights, a newsletter on the global tea trade, and is the author of Spill the Tea: Unveiling the Mysteries of Blended, Flavored, and Herbal Teas. He's a frequent contributor to leading industry publications like STiR Coffee and Tea Magazine and Tea and Coffee Trade Journal. He also co-leads Steep Insights: Founder’s Circle, a membership community supporting early-stage tea entrepreneurs.