What Separates a Professional Chef from a Home Cook The difference between a professional private chef and someone who "can cook" is formal training, hands-on kitchen experience, and reliable execution under pressure. When hiring, look for tangible proof of competency. Essential Qualifications to Verify Culinary diploma or apprenticeship, current HACCP food-safety certification, fluent English, and verifiable references from past clients. Ask candidates for portfolio menus and client testimonials before scheduling an interview. How to Vet a Chef Step by Step Request documentation, conduct a screening call, perform an in-person interview, check references, and — for important events — arrange a small tasting at cost. See the full qualification breakdown in our detailed credentials guide .