"Manufactured in Tulsa since 1948 by World War II veteran Grant Hastings, this charcoal oven is prized for being able to smoke, grill, or bake in the same unit and switch between modes quickly. Distinguishing design features include a side access door to feed charcoal and pull out the ash pit, a vertically adjustable charcoal tray for rapid searing or low-temperature smoking, and a grease drain for easier cleanup. Though built and marketed for home use and offered in several sizes and finishes (most models retailing roughly $1,000–$2,000), it has become a cult favorite among chefs for its flavor, durability, quick hardwood-charcoal lighting, and versatility—so much so that restaurants and food trucks frequently adopt them for professional cooking." - Naomi Tomky