Hey diesel I'll add my grandmother recipe
I've made literally tons of apricots jam and so my parents and grandparents
skin on
half apricot weight (no pits) half sugar. You can vary a little but never less than 40% sugar (this is where preservation resides)
In the evening cut the apricots in pieces (let's say 8-12 per apricot) and mix with the right amount of sugar in the pot or cauldron you're using to boil it.
Let rest overnight with a lid on. (you can skip this phase even if grandma always did it)
next morning start the boiling and stirring thing
have a right amount of jars cleansed and rinsed. And use that kind of lid that click if they are not airtigh closed !!
When the jam is ready start this fast action
- take a jar and lid. put a small dose of ethyl alcohol in it and shake it well.
- pour out all the alcohol
- fill the jar (never too much) and close the lid tigh
- keep all the jars close so they cool slowly
- when cool check all the jar lids. if they click they're are not airtight and need to be used immediatly.
Apricoat cake for many days after making jam
never did the sanitizing or after boiling thing. I'm pretty sure if you pour the jam while still boiling and double check the lids closing you will kill all possible pathogenic microbes