Heat.
My understanding was you can get Botulism from ANY improperly canned foods, meaning the seal was not air-tight.
in a cool dry place
yup
It's just an aging process. Many home-canned foods may darken with time but this usually does not effect quality or safety of the food.
Kiwi can be canned as part of a jam. There is a recipe for strawberry-kiwi jam at the National Center for Home Food Preservation (NCHFP) website.
put salt on it
You can usually buy temporary filling kits from the chemist/pharmacy but they are not a permanent solution.
They will spoil. There are no preservatives in home canned preserves.
NO as in heck NO
Apple launched the Macintosh computer for home use in 1984.
If you have to ask, don't eat it.
well i would say that it would be mac and cheese.