Inks by the French store [L'Artisan Pastellier](https://artisanpastellier.com/). They have multiple ink lines of which _Callifolio_ and _Encre classiques_ are the most well known. Inks tend to be thin and perform better in wider, wetter nibs. They do clean out very easily. Work well as washes in art-esque use.
by Urban Hafner