Place in a pot with preserving sugar, orange zest, and lemon juice.
Cover and let sit overnight in a cool place.
Then bring to a boil, stirring constantly, and let boil briskly for 5–7 minutes.
Remove from heat and pass through a fine sieve.
Fill hot rinsed canning jars with the hot marmalade, close tightly, and put in a cool place
Notes & Wine Advice
Blackberries against Sugar
The fruit of the blackberry bush (Rubus fruticosus), which belongs to the rose family, can be found in both wild and cultivated variations. There are styptic, anti-inflammatory, and antidiabetic properties attributed to the blackberry. One of the youngest varieties is the thornlessly cultivated “Thornfree.” The Choctaw, Navajo, and Loch Ness varieties are also particularly delicious