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Follow the instructions on the tin.
As long as it it sealed and not far past its due date, it should be fine. :)
Tin
There is no need to freeze cocoa powder; it will keep for a very long time in a tightly covered tin.
45min. to an hour
Tin is a good heat conductor. So to keep hot water in a tin can hot you need to insulate the outside and bottom of the can with something that does not absorb heat but instead contains it next to the can.
It helps keep out moisture.
Of Course
Sealed in the tin? Usually a year or two. Once the tin has been opened, and assuming that the unused portion is being kept refrigerated, no more than a week.
yes if you keep it in the tin
The tin can
It takes about