Ice block

Created in a Tub at (TBD height) high altitude. Available at night time (6pm-6am). Add 20 water to tub, wait for it to evaporate.

Ice Block in inventory melts at 10am give or take a couple of minutes. Placing 2 blocks in a chest does not melt at 10am, adding more blocks makes the chest a refrigerator. Have had 10-11 blocks in the chest for several days and it seems to keep jugs of milk longer. Chests hold 22 ice blocks for the refrigerator, any more are stashed as removable items.