Puff pastry cod fish

Preparation

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  Unroll the pastry sheet. Apply the spinash in the center, making a fish-like shape. Put the cod fish on top of it.
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  Slice the mozzarella, and put it on the fish. Cut strips of pastry on each side of the fish.
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  Braid the pastry on the fish, one side at a time.
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  Close the edges applying pressure on them. Use some pastry to form a tail and stick it at the end. Brush with the egg yolk.
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  Bake 30 minutes at 350°F (180°C).
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  There you are, your puff pastry fish is ready!