To describe being a cook on a resume, one can mention the relevant experience in preparing, cooking, and presenting food in a professional kitchen environment. They can highlight their ability to follow recipes, create menus, and oversee kitchen operations to ensure food quality and safety. Additionally, they can mention their skills in food preparation techniques, including chopping, slicing, and seasoning, as well as their knowledge of different food allergies and dietary restrictions. Any certifications or training received, such as in food safety and sanitation, can also be included.