Décor and ambience
Jug of Mimosa
In the room
Jug of Mimosa goes behind the counter. It adds +1 ambience to the shop, whatever it was paid with. See ambience.
Part of The counter of curiosities with The Tipping Hen and Quimper Plates: owning the whole set pays 5 pearls once and adds +2 ambience.
Spoiler Another way to get it
It can also arrive as a present from Gaspard. If you already own it, you get its price back in pearls.