Permafrost-Soil and Snow, Ice for better food storage, longer food shell time

[RobinHood]

Permafrost can be found in the Arctic, Subarctic and at high altitudes in the high mountain range. Permafrost is completely normal soil, but because of the bound and very cold ice it does smelt down only in the the first 1,2,3 layers in short and hot summers, layer 4-8 shouldn't. smelt down e.g.

Permafrost soil can be found in a somewhat deeper layer.

With a vessel and a cellar, food only spoils at a rate of 0.26x. If your cellar is build into a permafrost layers, this rate should be significantly reduced again. E.g. 0,16x

Unlike Tera Preta, permafrost-soil transforms in warmer areas (bound ice will smelt) and you have 'only' soil in your hands.

my second suggestion, if you are in a warmer climatzone, you can put some ice or snow into your vessel and it will cooling down your food too. But Ice and Snow will smelt down after some days in your vessel and you have put snow or ice again. 

Edit: we often dont have such thick Soil-layers, maybe a stone layer could be also a permafrost-block

Edited April 29, 2021 by RobinHood

[Soliton]

You made an interesting suggestion and I began to wonder how could permafrost be implemented as a game mechanic?  

1. To start with, soil should be effected by block gravity.
2. Freezing temperatures should act as block reinforcement on soil, much in the same way when the plumb and level is used.
3. At a particular level of reinforcement the physics of the block changes and it no longer becomes susceptible to block gravity.   
   1. Much in the same way that water becomes ice during winter.
4. To maintain that level of reinforcement, the "permafrost" block would need to be placed next to a block of ice.  
5. While glacier ice is currently harvestable, I would suggest making lake ice harvestable with a saw.  
6. Repurpose existing greenhouse multiblock mechanic to make a "ice house" but the walls and floor are two blocks thick and comprised of an ice block next (below or adjacent) to a permafrost block.
7. This results in a 3x3 open area.
8. Food stored in this area would have significant reduction to decay.  
9. Alternatively, if you placed glass over the top, maybe it could be used like an inverse greenhouse?  
   1. Farmland in 3x3 open area would be 5 degrees cooler than environment.
   2. Extends the growing season of some vegetables in warmer climates.