Acquire a very particular ink
From Fallen London Wiki
| Spoiler warning! This page contains details about Fallen London Actions. |
From: Practise with your Copper Cipher Ring
When the Game requires one to have a tattoo, Clathermont's is the place to get it. Some inks are harder to come by than others, however; and he's running low.
Unlocked with 
3 x Favours: The Great Game
Locked with Renown: The Great Game 8
Success
Ordering off-menu
Once you have your waiter's attention […] you make a few observations […] accompanied by an unusual, double-spouted tea pot. The ink […] is within. […] plugging the spouts, sealing the lid, and hiding it under your coat till you reach Mr Clathermont.
[Find the rest of the story at https://www.fallenlondon.com]
You've gained 1 x Tutorial: Courting Factions (up to 1) (hidden)
Renown: The Great Game is increasing… (+1 CP per 
Favour, up to level 55)- Your 'Favours: The Great Game' Quality has gone!
Watchful is increasing… (+10 CP, up to level 200 + 
Watchful Gains)
