Ink a dink a doo

I recently bought a few more inks for my fountain pens. These are Noodler’s inks from the Eternal line which is waterproof once dry. I thought perhaps a waterproof ink would be best for addressing letters and things which could get exposed to inclement weather along the way to their destination. I’m just discovering all the fascinating inks that Noodler produces and I’m sure I’ll add more before I’m done. One of my new pen pals asked if I made scented ink which sent me questing for recipes. As a soaper I have plenty of essential oil so it would be an easy thing to try. (Don’t worry Melanie, I won’t ever send you anything scented!)