Of course, it is a kind of exploit which breaks some of background game mechanisms, and regarded as a cheat and will be looked down upon, if you have been informed and still tried.
First, find a scroll of change material, and then read it to change something large enough into ommel cerumen, and eat it. Although you can't make other ommel stuffs or holy banana flesh, it works because DevTeam failed to forbid player to make ommel cerumen.
=== What is the "library exploit"? ===
A. It is a simple trick utilising a flaw in the game's shop mechanics involving the use of Attnam's library building, allowing for the cost-free repossession and thus resale of items in order to make a substantial amount of gold with no consequences for the player - provided it is done correctly. It is widely regarded as cheating.
First off, any eligible items for sale in the library (scrolls, books) should be dropped on the door tile of the shop, once the door has been opened. Once all items have been dropped, stand on the tile directly above the open door and 'k'ick the items downward so that they leave the store and sail forth into the snow outside. Once all items are removed from the store, pick them up and sell them again, repeating the process until the Librarian is broke. You can also buy everything in the library and gain your money back, allowing for access to many great items (such as the SoCM) early on in the game.
Caution: be careful of when you kick the objects out of the store, as they may collide with the patrol guard who patrols the outer walls - this will turn all of Attnam hostile towards you.