The diagrams illustrate the components of a fish pie and how frozen fish pie is produced.
Overall, it is clear that this process consists of several steps that can be divided into two main stages. It begins with the preparation of essential ingredients and ends with a freezing step before the resulting products are sold in the store.
Initially, potatoes are delivered to the factory, and this transportation process lasts for up to one month. In the preparation step, potatoes are cleaned to remove dirt, then peeled and cut into small slices. These sliced potatoes are boiled and chilled afterward. Following the manufacturing line, these chilled potatoes will be put into bags to preserve them before passing to the next stage.
The fresh salmon is transported to the production place in 12 hours or less. Subsequently, lemon juice and salt are added to soak the salmon, respectively, and it is put into a steam oven. In this next step, manual laborers are involved in this process; the external skins and bones of salmon are removed completely, and then, it is inspected again. Turning to the process of mixing ingredients, prepared peas and sauce are put together with the stored potatoes and steamed salmon. This mixture is then put into a microwaveable container to be wrapped by people. These resulting products pass the line to be frozen before being sold in the store or dispatched.