1. Determine the nutritional needs of diners: This includes understanding the energy needs of diners, the needs of three nutrients, and the specific values of various nutrients, such as carbohydrates, protein, fat, dietary fiber, vitamins and minerals. These values can be determined by calculating or referring to the authoritative reference intake of nutrients.

2. Calculate the calorie and nutrient content of each food: Calculate the calorie and nutrient content of each food according to the nutritional needs of diners and the food ingredient list or food label.

3. Determine the types and portions of food: Determine the types and portions of food according to the nutritional needs of diners and the calories and nutritional components of food. This needs to consider the collocation between foods and the balance of nutrition.

4. Make daily recipes: According to the eating habits and preferences of diners, make breakfast, lunch and dinner recipes to ensure rich food types and balanced nutrition.

5. Adjust and optimize the recipes: After making the preliminary recipes, it is necessary to further adjust and optimize the recipes to ensure that the recipes meet the tastes and eating habits of diners and ensure a balanced nutrition.

The function of making recipes:

1. Ensure a balanced nutrition: the preparation of recipes needs to be determined according to the nutritional needs of diners and the calorie and nutritional content of food, so as to ensure a balanced intake of various nutrients in food and meet the nutritional needs of diners.

2. Convenient management of family meals: recipes can be used as the basis for family meal planning, helping families to manage family meals in a planned way. Preparing food according to recipes can avoid food waste and repeated purchases, and improve the efficiency of family meal management.

3. Promote health: A reasonable diet can meet the human body's demand for various nutrients, help prevent malnutrition and various diseases, and promote health.