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1. making leather tanning
Once a corpse has been skinned, preserved, and scraped, you are ready to
start the tanning process (i.e. turning raw animal skin into leather by
soaking it in tannin).
You will need the skin and a material called tannin. Place both in a
cauldron and begin the process with the command 'make <amount> leather'.
The amount is the number of leathers you want to make.
The tannin will slowly bind with the skin, causing it to become more
flexible, durable, and resistant to bacteria, changing it into leather. To
make more than 1 leather at a time, add additional tannins to the cauldron
with the skins (1 skin requires 1 tannin).