Read a student's recipe.
Cheese and Vegetable Omelet
1. Crack two eggs in a bowl, and whisk them with a fork until the eggs are thoroughly blended.
2. Add 2 tablespoons of milk to the bowl, and whisk.
3. Place a pan over medium heat, and lightly coat it with a non-stick cooking spray.
4. Pour the egg mixture into a pan, and cook until the edge of the egg turns a golden brown.
5. Sprinkle shredded cheese and chopped vegetables evenly on top of the egg. Continue cooking until the cheese begins to melt.
6. Using a spatula, carefully fold the egg in half.
7. Carefully slide the omelet onto a plate.

What essential part is missing from this recipe?

A. a cooking method
B. a clear goal
C. a list of ingredients
D. a procedure