4 years ago we first mixed Fish Guts ink to accompany our fountain pen. Every pen came with a bottle of this dark teal ink. The pen has long sold out but the ink we have never stopped using. Now for the first time (don’t ask why?) it is available to buy online along with its partner highlighting ink called Orange Indicator. Both the Schofield inks are made in England and bottled in fine Italian glass with engraved phenolic lids.