It is possible that the canned tomatoes are old and/or have been exposed to light.
Heat.
Canned corn, in a glass mason jar, if properly canned in a water bath or pressure canner does not require refrigeration until opened. Then it should be used within 4-5 days.
Dark Corners - 2012 Jar of Pennies 1-13 was released on: USA: 13 December 2012
"Can", as in is able to, would be "could" in the past tense. "Can", as in to jar something, would be "canned" in the past tense.
Yes they can. Be sure to drain the liquid if you use canned/jar mandarin oranges prior to putting them in jello.
According to the USDA's website beef jerky should be placed in a glass jar or plastic bag and stored in the refrigerator or freezer. Since they do not indicate that it can be canned it would not be advisable.
That sounds like mold. They might not have been processed properly.
Almost all canned and jar foods contain preservatives. Preservatives help lengthen the shelf-life of foods.
The lid was probably not sealed tight enough, allowing air to get inside the jar.
A year is safe. Check the date on the can, or jar, if home-canned.
It depends on the jar. but there is about 15-30 pickles in each
it means the tomatos are gone ofNot necessarily true. According to the Penn State Extension office:Seed Discoloration - Canned TomatoesA consumer brought in a jar of home canned tomatoes to the office (canned last year). Some, but not all of the seeds have turned black. Is there any danger in using these tomatoes? ANSWER - If the seeds began to discolor during storage, it is probably not a sign of spoilage as long as the product was processed correctly and a vacuum, indicating a tight seal, has been maintained. It may be a reaction of harmless polyphenol compounds in the seeds with iron or other minerals in the water.http://extension.psu.edu/food-safety/food-preservation/faq/seed-discoloration-canned-tomatoesAccessed January 25, 2013.