When sourcing a ghee making machine, prioritize Grade 304 or 316 Stainless Steel construction to ensure food safety and corrosion resistance. The machine should feature a triple-walled jacketed kettle for uniform heating, which prevents localized burning of milk solids. Look for high-torque agitators with PTFE scrapers to ensure the bottom and sides are constantly cleared, maintaining product consistency. Additionally, verify the heating source compatibility (Steam, Electric, or Gas) based on your facility's utility availability.