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8 très gros champignons de Paris
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1 côte de porc dans l'échine (160 g)
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1 tranche de basse côte de buf
(160 g)
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50 g de beurre (40 + 10)
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1 uf
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1 oignon paille
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2 tranches de pain de mie
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4 gousses d'ail
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1 cuillère à café de gros sel
gris de Guérande
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4 brins de persil
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Sel fin, poivre du moulin