Translations for potato in French

Here are paragraphs from public domain books translated:

"In his food. Concealed in his bread of in a potato, perhaps."	— Dans ses aliments, au milieu de son pain ou d’une pomme de terre, que sais-je ?
The Extraordinary Adventures of Arsene Lupin, Gentleman Burglar, by Maurice Leblanc	Arsène Lupin gentleman-cambrioleur, de Maurice Leblanc