- Ice & Snow - Snow is harvested from a 'snowy tile' which becomes a 'snowy grass tile' until it decays back to a snowy tile probably based on decay and 'weather' (a decay modifier in a new decay system!). Several snow could be used to pack food into a chest to make frozen food or frozen meat. It melts
- Frozen Food - Should probably modify the FEPs somehow. Hard to say until we see where the game is at then. Obviously certain foods wouldn't be able to be preserved this way and other foods would be. Perhaps it doesn't modify FEP's and this would be its advantage over say salting or smoking (which might add some tiny rainbow of certain FEPs depending on where the salt comes from or what type of wood is used to smoke it).
- Freezer burnt food - Just for you masochist dorfs.

- Ice chests - Crafted with Tempered Steel and special clamping tools that forge uniquely strong joints and bands that are required to hold the extremely thick and highly compressed hides of an exceptionally woolly northern beast. Because Ice will melt shortly after leaving the frozen climate zones anything frozen must be placed into an ice chest for transport. While frozen foods will keep for an extraordinarily long time this won't do for trading frozen foods outside the zones. Ice chests have two inventories one of which is 'ice stock' and snow or ice can be placed here. The chests spends the ice to keep the contents from thawing and must be replaced. Trading Caravans travelling long distances would then be able to have Ice chests which contain only Ice depending on how far the cargo needed to travel. They should have a very large capacity and be rather very expensive and difficult to produce but very efficiently do what they are designed to do and they should be able to go for an IRL week without having to be repacked with ice.
- Incidentally, ice itself should be a valuable enough commodity that it isn't a waste of space to take 'insurance.' This should be had nicely by the fact that keeping what you just bought frozen long enough till you're ready to use it will require additional ice. Then, there is 'tempered steel'.
Tempered Steel - The adamantium of H&H. Requires a forge, an anvil and an Ice bath. What it would do or be used for has a wide array of implication. I'm thinking Damascus steel here. Keeping things balanced however may prove difficult when providing a natural technological resource advantage to one location. Consideration would have to be given to unique 'high end' resources for other locations.
-Ice should melt/chests melt at half the rate when stored in a celler or mine.