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The diagrams show what is inside a frozen fish pie and how it is made in a factory.
Overall, the fish pie contains fish, peas, sauce and potatoes in a microwaveable container. The production process has two main parts: preparing the potatoes and preparing the salmon, and then everything is put together, frozen and sent out.
The potatoes are delivered to the factory up to one month before they are used. First, they are cleaned and peeled, and then they are sliced. After that, the potato slices are boiled, chilled and stored until they are needed.
The fresh salmon must be delivered in 12 hours or less. Lemon juice and salt are added to the salmon, and then it is cooked in a steam oven. Next, workers remove the skins and bones, and the fish is inspected. After this, prepared peas, prepared sauce and the potatoes are added to the fish. Finally, the pies are wrapped, frozen and then stored before they are dispatched to shops.