Final answer:
A schematic drawing depicting the process to manufacture a food item is called a process flow diagram or process flowchart, exemplified by Figure 7.3 which illustrates the production process for pizza.
Step-by-step explanation:
The name of a schematic drawing that represents the flow of the process to manufacture a given food item is commonly referred to as a process flow diagram (PFD) or a process flowchart. This type of diagram provides a visual representation of the sequence of operations or steps involved in the production of food, including the inputs such as ingredients, energy and labor, as well as the various stages of processing, and the end products. For example, Figure 7.3 depicts the production process for pizza, showing the necessary components and steps involved in making the pizza from start to finish.