Collection of vague ideas around a new “chef” role:

• Immunity to choking.
• Gets bonuses of some sort for being satiated.
• Either starts with a tinning kit and tin opener and gets a bonus from making tins, or eating from tins is a disgrace to their palate and gives them penalties.
• Hungers faster than normal, but is able to get extra nutrition out of corpses if they properly prepare them.
• May have similarities to hobbit races in some variants with regards to food mechanics.

When opening a tin with a tin opener, the beatitude of the tin opener is added to the tin similar to how markers and scrolls work (e.g. a blessed tin opener opening an uncursed tin will treat it like a blessed tin).

Delicatessens buy and sell tin openers, though they may not actually generate with any (it would internally appear on the list of the shop’s wares, but with 0 frequency).

Also, the canned food factory shop type in UnNetHack should buy and sell these.

You need to have hands in order to operate a tinning kit or tin opener.