The premise is based on something which happened to François Ozon in real life. One of his aunts had prepared a meal for the whole family with mushrooms which she had picked herself in the woods, and everyone got sick during the following night, except her, as she hadn't eaten the mushrooms. Ozon was fascinated by what happened, and suspected his aunt had wanted to poison everyone.
The location shooting took place in Burgundy, in the town of Donzy, near Cosne-sur-Loire, in a rural region rarely shown on screen.
Writer/director François Ozon had already worked with Hélène Vincent, Josiane Balasko and Pierre Lottin in Gelobt sei Gott (2018), and with Ludivine Sagnier in Swimming Pool (2003).
Hélène Vincent has lived fr more than 10 years in the same region.
French visa # 160636 delivered on 2-9-2024.