Out of all the different ingredients that can be added to a batch of jam (and there are a TON of available options if you're willing to get creative), the one that makes the biggest difference to the end result is the fruit being used.
If you can talk to the individual who planted or watered or weeded or picked the fruit you're planning to use for jam, it's the closest thing to getting a guarantee that your end result will be pretty great stuff.
No matter what experts say, I don't believe that there's a substitute that tastes as good as "field fresh" fruit.

It's true that you CAN make jam from frozen stuff where you don't have to remove stems or seeds or pits, it's also true that it's that frozen taste you're gonna be preserving - and since there will always be more bags of frozen berries available, why would you need to "preserve" that??
For me, it's the difference between a garden tomato and a supermarket tomato. They're the same thing, but they taste like they're barely related to each other. So for everyone who says "Well heck - I can BUY jam at the supermarket" - yes, yes you can. But it's never gonna taste like this.


