Mise en place refers to having all ingredients and tools prepared ahead of time before starting to cook. It is important in professional kitchens for efficiency and safety. Proper preparation involves assembling tools and ingredients, washing and cutting raw materials, and setting up equipment needed for recipes. Knife skills are also essential, including using the correct grip and knife for different tasks, as well as basic cuts like dice, julienne, brunoise, and batonnet. Being organized with mise en place allows cooks to focus on cooking and produce high quality results.