Ingredients :

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500g of calf liver cut into slices,
350g of onions,
150g of butter,
1 lemon,
parsley,
salt and pepper.

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Method :

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Chop the onions and cook them in a frying pan with half the butter and a touch of salt and pepper.

Cook the slices of liver in another frying pan with the remaining butter; again with salt and pepper.

Add the onions to the liver and squeeze the lemon juice over them. Place the finished preparation on a plate laid with finely chopped parsley.