ANY recipes with make a larger batch of jam?

Mise en place - my sister in law prepares everything before she starts and to make it worth her time and effort she has multiple pots going at the same time. They also have a motorhome so part of the process is done in the kitchen and part in the motorhome. She and my brother can turn out 24+ jars at a time. It does make a difference if you have an extra pair of hands or two. Even if you do not have the luxury of 2 kitchen facilities you can still turn out a dozen jars in one session.

I did some research on google. Here are the reason's in a nutshell. If you double the recipe, you have to increase the boiling time. Also, this:

The reason pectin likes to be alone is that it is electrically charged, and as all pectin have the same electrical charge, they push away against each other much as the same pole of a magnet will repel each other. Therefore, in order to turn the solitary pectin molecules into a water trapping cage, you have to do two things: first, you have to make sure that the pectin have no better place to be; second, you have to get them to want to spend time together.

This is a very good sight to see why you shouldn't.

http://www.finecooking.com/article/double-or-nothing-jam

I used to make 60 lbs of strawberry jam at a time cause I lived near a pick-it yourself farm, and I always used commercial pectin for making big batches, I always used very little sugar. http://www.pomonapectin.com/recipes/unsweetened-strawberry-jam/

This is the one to use, buy it on Amazon if you can't find it. Lots of recipes on their site. http://www.pomonapectin.com/recipes/

You might want to invest in a Ball jam maker. It does all the computing work for you for temperature, time, ingredients for each type of jam or jelly, stirring, and timing. I love my Ball jam maker! I wish I had one yrs ago! The job is EASY now!

I often double my recipe and it works fine, gooseberry, blackcurrant, peach and rhubarb/strawberry, strawberry by itself have not had a lot of luck with, doesn't want to set. hope this helps

Thanks for the info, Sharon. Appreciate your help!

If any recipe says don't double,, I don't. What I do is make multiple single recipes at once. Three bowls, single recipe in each..sometimes I amaze myself my ingenuity...

That's probably the safest way....just a few more sticky bowls and pans to wash!

Thanks!