The diagrams below give information about the manufacture of frozen fish pies.

The pictures illustrate the ingredients that go into a factory-made

fish

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pie, and the various steps in its production. The pie contains salmon, peas, sauce and

potatoes

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, and there are ten stages in its manufacture, from delivery to dispatch. One of the ingredients,

potato

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the potato

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, goes through its own six-stage preparation process before it can be added to the pie.

Potatoes

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are the first ingredient to be prepared on the production line. They are delivered to the factory up to a month before the process begins, and they must be cleaned, peeled and sliced. Potato peelings are thrown away, and the sliced

potatoes

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are boiled,

then

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chilled and stored. When fresh salmon arrives at the factory, lemon juice and salt are added, and the

fish

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is cooked in a steam oven within 12 hours of delivery.

Next,

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factory workers remove and dispose of the skin and bones, and the

fish

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is inspected. Following inspection, pre-prepared peas, sauce and

potatoes

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are added. The resulting

fish

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pies are wrapped, frozen and

then

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stored or dispatched.