Iced Tea is a Crock pot dish introduced in the Hamlet DLC, produced by combining two Orange Pikos, a Sweetener, and Ice. It also can be obtained by cooking Tea in the Crock Pot, and wait 1 day for it to cool down.
It restores 3 , 12.5 and 33 when drunk, lowers body temperature by 10 and increases walking speed. It takes 10 seconds to cook, and 6 days to spoil.
After one day
If you opt for the 2nd solution (making normal Tea and wait 1 day), be careful not to put the Tea in an Ice Box, since it will -paradoxically- slow down the cooling time.