Beverage tins, which contain a potion instead of meat from a monster. Randomly generated ones always have potions with the “bubbly”, “fizzy” or “effervescent” appearance.

When you eat such a tin, it “opens with a loud hiss!”, making noise in some radius. It always takes 1 turn to open regardless of beatitude. Then you are shown its appearance. If you are not blind, you see it directly (“It contains a bubbly liquid”); if you are blind but have identified the potion, you recognize the potion by the smell; otherwise you get a generic “It feels like some liquid is inside”. Then you’re prompted to drink it, like with any other tin. If you do, you experience the same effects as you would from a potion of the corresponding beatitude.

Tinning kits could possibly convert potions into homemade beverage tins, but there needs to be some sort of downside which hasn’t yet been proposed. As it stands, you would be able to convert a 20-weight potion into a 10-weight unbreakable potion. The existing downsides are that it expends a tinning kit charge and the resulting potion can’t be dipped, alchemized with, or thrown, but for the sort of potions one would want to turn into tins, these aren’t really downsides.

A tinning kit for pets, or some other way to create tins that are not designed to be eaten by the player but instead opened with an adjacent pet that will always eat whatever it is in the tin, so you can give them resistances in a controlled manner.

Blessed tinning kits have a chance of creating multiple tins from large, high-nutrition monsters. Specifically:

• If the monster’s corpse is 800 or less nutrition (the amount from a food ration), it always makes 1 tin.
• If the monster’s corpse is greater than 800 nutrition, it produces NUTR / 800 tins, plus possibly one more with a (NUTR % 800) / 800 chance. (So a monster whose corpse is 2000 nutrition would always produce 2 tins with a 50% chance of a third.)
• It expends a charge for each tin produced like normal. If it would make more tins than there were charges, the amount of tins is capped at the number of charges.

Tins dropped by / generated with hobbits are biased towards high-nutrition preparation methods. Additionally, there can be some high-nutrition preparation methods which only appear on hobbit tins: “wild mushroom foo”, “second breakfast of foo”, “foo for elevenses”, “luncheon foo”, “foo tart”, “foo porridge”, “foo stew”. If hobbit is a playable race, they are capable of making these tins with a tinning kit in addition to the regular “homemade”. And possibly an artifact tinning kit that allows anyone to produce hobbit-style tins.

Artifact tinning kit that makes special tins out of corpses; the tins when eaten polymorph you into that monster.

A tinning kit’s weight is dependent on how many charges it has left, getting lighter as it is used to tin things. This could also be extended to other tools which have charges and are not magical, such as cans of grease.

Tinning kits are lighter, but generate with a small amount of charges rather than the large amount they currently have.

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

Tinning huge corpses produces the tin as usual, but just makes the corpse partially eaten instead of destroying it.

Tinning the corpse of a named creature transfers the name to the tin.

Rust monster corpses are untinnable, or else attempting to tin them rusts the tinning kit.

Tinning kits include tin openers implicitly, so if you wield it you can open tins.