I have a very good fruit garden, I have lots of fruit. I can them without anything else, it’s very easy. Heat conserves my fruit, not added sugar. It works with vegetables too so it’s not even the big amount of sugar in fruits…
I simply use a pressure cooker with water and the closed jars in it. When it’s boiling, I slowly cook the fruit for 15 minutes and let them cool in the pressure cooker. They are almost excusively good even after 4-5 years, I simply don’t have older ones
I tried to dry fruits but they rot, wasps attacked me when I did them outside (apricots. I had 3 trees and I didn’t know this method but I couldn’t keep up anyway. one tree is stressful enough) and my dehydrator is tiny. I had lots of apricots last year, 120 mostly big jars, full… Only one tree and we ate and gifted some fruit… Dehydration using a little dehydrator was totally impossible. But one can do it with a tiny amount of berries and sour cherries, of course. I even did fruit… sheets? I don’t know the English term, it’s a raw vegan thing Mildly fun.
It would be HORRIBLE to use sugar in my canned fruit and jams as fruits are already quite sweet in most cases, definitely way too sweet in some, I need to enjoy them until I don’t find them all too sweet (well I still can drown them in unsweetened chocolate or eat them in pancakes or ice cream or even alone but in very tiny amounts… ;))
(I never used sugar in not sweet breads either, by the way. I don’t know why people put sugar into everything even if there is no need for it, honestly. My peasant anchestors baked bread without sugar. Sugar is overrated if you ask me.)