Blackberry Jam
Ingredients
Directions
Prepare the fruit
Wash and cap the blackberries.
Run the berries through a meat grinder.
Cook and seal
Combine equal parts of fruit and sugar in a pot.
Cook rapidly for 35 to 40 minutes.
Pour into jars 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 pulp, flavor, and natural pectin that helps the jam thicken.
- Sugar
- Sweetens the jam and binds water, helping it set and keep well.
The step that matters
Cook rapidly for 35 to 40 minutes. The mixture must reach the gel point to set. Cooking too briefly leaves the jam runny, while cooking too long can darken the color and dull the fresh fruit flavor.
“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.