Make historic oak gall ink for yourself.
The kit has all you need:
Full instruction sheet
Hand ground welsh oak galls, gathered carefully by cat, in autumn/winter
Iron crystals (or you can use your own 'rusty water' - instructions included)
Gum arabic powder, to thicken and give a silky flow to your ink.
A hand cut willow stick pen.
Rag paper 2 x a6
A small ink test card by cat