Making Blackberry Jam

We were pleasantly surprised this year by the size and amount of blackberries we picked from our 2 blackberry canes that we planted last year. I made a couple of blackberry cobblers with some of the harvest. We picked the rest as they came in a little at a time and put them in the freezer. We also picked a few wild blackberries from our rural property and froze them. The blackberries from our thornless canes are substantially larger than the wild blackberries, but we are thankful for them all. It is ok to pick a few of your berries a little early before they have completely ripened (with just a touch of red in them) if you intend to use them for jam. The tart red blackberries have more pectin and will aid in the jam setting up. Still the majority of our berries were fully ripe when picked. All total I believe we froze about 4 gallons of blackberries.
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