Brown fountain pen ink from DeAtramentis, handmade in Germany.
The Artist Ink is waterproof and lightfast. All inks of this group are mixable with each other. The inks can be painted and written with fountain pen, brush and quill pen.
Read a full review of this ink from The Well-Appointed Desk.
This ink is made by hand in small batches, therefore there could be some color variation between bottles of ink.