Blackberry Jam
Ingredients
Directions
Combine the blackberries and sugar in a kettle.
Boil for 2 hours, stirring frequently.
Add any spices you like or omit them.
Once cool, transfer to a jar, cover with branded paper, and seal.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
What each ingredient does
- Blackberries
- Provide the fruit bulk, flavor, and natural pectin that help the jam thicken.
- Sugar
- Sweetens the jam, helps it set, and acts as a preservative by binding water.
The step that matters
Boiling for 2 hours while stirring. Long, frequent stirring prevents scorching on the bottom of the kettle, while sustained boiling drives off water so the jam can thicken as it cools.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
More blackberry jam recipes
You might also like
White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipes
Spice Cake344 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.