Cooking shortening is made to last a long time. It contains preservatives that allow this. Each container of shortening will have an expected life date on it. Look for the expiration date.
yes shortening go bad
No, as long as the cupcake pan is coated with shortening or cooking spray.
The only health risk to using "old" shortening, is the health risks you assume by using shortening at all. Shortening (usually vegetable shortening [hydrogenated oils/ transfats], lard or clarified butter) is usually processed so that it has a very long shelf life[years] and is no different at the end of the shelflife than at the beginning. Shortening lasts a very long time, as long as it doesn't get contaminated.
You can prepare them the night before, but I do not suggest cooking them until the day of.
It is on sale right now.
5 days
until it goes bad
until there is no more pink color in the middle
Until the swelling goes down .
10 years
It goes on until Erin hunter lives i think
it takes about 2 months for it to go bad. well it really depends on the oil
its good until it evaporates. the liquid is not actually what burns, the fumes it gives off is