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Canned food can be good for a year or more. If it is ruined, the gases inside the can will cause the can to bulge.
Canned soda comes in regular and diet. The regular canned soda has about a nine month shelf life from the date it was made. Canned diet soda is good for about 3 to 4 months.
In theory: Quite some time. In fact: Canned food becomes more and more tasteless and unappetizing as it ages. In practice: Discard canned food past it's expiration date.
If it was store bought in the can, it should have an expiration date. If you canned it yourself, it should be good for a year or so, as long as it was properly sealed and kept in a cool, dry place.
What ever the date on the can say's, or if no date about 1 year
Most canned and bottled food items can be stored for a long time. But smell and then taste a tiny bit. If it is not "off", then use it.
Home canned goods can be safely kept until the lid starts to rust or the seal is broken, but really should be used before the next harvest. Commercially canned stuff usually carries a best-by date. I wouldn't use it much past 6 months later.
Usually the sell by date, but it is still a good guide to when it is ok to eat the food. If it's too long after the sell-by date, it probably won't be good anymore. The dates stamped on canned goods should indicate what they mean. The print will say, 'sell by' or 'use by' or 'best before' and so on, depending on food legislation in your area.
Only use these food additives in canned, it can sale a long time.
Any can liquid or food can be used after expiration date about 5 months. I tried it and nothing happened.
It is affective for preserving food for a long time.
It does depend upon the food, storage conditions and the quality of the cans and the processing. Canned food can maintain good quality for up to three years.