Refrigerator Plum Jam Recipe with a Cold-Plate Test
A simple plum jam cooked with sugar and optional citric acid, then stored under refrigeration for short-term use.
This plum jam uses one kilogram of plums and 800 grams of sugar, with a small optional amount of citric acid to help maintain colour. The fruit macerates with the sugar before simmering, which helps draw out its juices and keeps the early cooking even. Stir regularly as the mixture thickens and use the cold-plate test described in the source to judge the set. The source suggests sealing jars for winter storage, but no validated pantry-canning process is supplied. This card is for refrigerated jam only: spoon it into clean containers, cool promptly, and use within three to four days. For longer storage, freeze in suitable containers.
Recipe card
Refrigerator Plum Jam Recipe with a Cold-Plate Test
Equipment: Heavy saucepan, wooden spoon, chilled plate, clean shallow jars or containers
Ingredients
Instructions
Prepare the plums
Wash, halve, and remove the stones. Cut larger fruit into quarters.
Macerate with sugar
Put plums and sugar in a heavy saucepan. Leave for 30–40 minutes until the fruit releases juice.
Cook the jam
Bring to a boil over medium heat, stirring. Lower the heat and simmer for 20–30 minutes, stirring often, until the fruit softens and the mixture thickens.
Test the set
Drop a little jam onto a chilled plate. Let it cool briefly; if it wrinkles when pushed, it is ready. Stir in optional citric acid near the end.
Cool and refrigerate
Transfer to clean shallow containers. Cool promptly and refrigerate within two hours. Use within three to four days, or freeze for longer storage. Do not pantry-store.
How to tell when it is ready
A small drop wrinkles slightly on a chilled plate after cooling briefly.
Tips
- Measure and prepare the ingredients before you begin.
- Use the pan size and heat level described in the steps.
- Taste for seasoning near the end and adjust only where the source allows.
- Watch the visual doneness cues rather than relying on time alone.
Troubleshooting
- If browning happens too quickly, lower the heat and continue cooking gently.
- If the mixture is too loose, cook uncovered briefly while stirring and watching closely.
Substitutions
- Use a similar neutral cooking oil where the source calls for vegetable oil.
- Choose a garnish from the listed serving options rather than changing the recipe base.
Variations
- Use one of the source-supported optional additions noted in the ingredient list.
- Keep the core ingredient ratios unchanged when trying a garnish variation.
Serving suggestions
- Serve freshly prepared as the recipe describes.
- Pair with a simple green salad or seasonal vegetables.
- Offer bread or rice on the side when it suits the dish.
- Serve sauces and garnishes separately so each person can adjust.
Make ahead
Prepare the measured ingredients in advance. Refrigerate perishable ingredients until cooking.
Storage
Refrigerate perishable leftovers promptly in a covered container at 4°C (40°F) or below. Use within three to four days.
Food safety
Keep perishable ingredients refrigerated until use. Refrigerate cooked leftovers within two hours and keep them at 4°C (40°F) or below.
Frequently asked questions
Can I prepare refrigerated plum jam ahead?
Prepare it close to serving for the best texture. If making ahead, refrigerate promptly and follow the storage directions.
How should I store refrigerated plum jam?
Refrigerate perishable leftovers promptly in a covered container at 4°C (40°F) or below. Use within three to four days.
Serve refrigerated plum jam while it is at its best, and refrigerate any leftovers promptly.
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