That sounds like mold. They might not have been processed properly.
They probably were not canned properly and you are seeing gas formation from microorganisms.
Yes, this is a usual reaction to the tomatoes if you have just opened the jar.
My understanding was you can get Botulism from ANY improperly canned foods, meaning the seal was not air-tight.
What ever the date on the can say's, or if no date about 1 year
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.
This film was called "Home Alone". The "white-haired kid" is Kevin McCallister, played by actor Macaulay Culkin.
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.
Fresh tomatoes might last a week. Home canned - about a year. Commercially canned - several years.
catch a bus
I believe that a white blemish on a tomato is caused by the stink bug - they are grey bugs that suck the juice out of tomatoes.
Chef at Home - 2004 Tomatoes 101 was released on: USA: 15 February 2005
Home from Home - film - was created in 1939.
yup
in a cool dry place