This formulation is based on a batch size of 1 kg. The recipe and method varies from a traditional jam in that no fruit is used and water needs to be evaporated from the mix to ensure the pectin sets. Recipe Ingredient | Weight | Pectin Jam (Apple, Multipurpose), Code ISPCAF4.5 | 5 g | Water | 300 g | Sugar | 600 g | Port Wine | 200 g | Citric Acid solution 50 %, Code ISCAAF | 2 – 10 ml | Gross weight | Approx 1110 g | Evaporation | 110 g | Net weight | 1000 g | Final solids | 65 % minimum | Final pH | 3.1 – 3.3 |
Method - Mix the pectin with about 50 g of the sugar and add to the cold water. Heat to the boil while stirring. Cook until the pectin is completely dissolved.
- Add the remaining sugar (550g) in 2 -3 amounts at regular intervals while heating. This avoids the temperature of the mix dropping due to the cooling effect of the cold sugar.
- Boil for 10 – 15 minutes. The mix needs to be boiled to 75 % soluble solids.
- Turn off the heat, cool to below 85°C and add the port wine. The water component of the port will drop the soluble solids to 65 %.
- Add 2 – 10 ml of 50 % citric acid solution to adjust the pH to 3.0 – 3.3, while maintaining temperature above 80º C. If you don’t have the ability to measure pH, taste the product and add acid until it becomes slightly tart to taste.
- To test the pectin set we suggest that you place a small amount of jam on a cold object (e.g. in the sink) and allow it to sit for 3 – 5 minutes. The jam should start to show signs of setting and should develop a slight skin that adheres to a finger when touched. If no sign of gelling is found, check to ensure pectin has been added, the solids are at least 65 % and the pH is low enough.
- Fill at 70 - 80ºC and burp the jars to create a vacuum (Screw the lid on, invert, open lid slightly to expel air, and reseal). This helps to prevent any mould growth.
Note: - It is vitally important that the boiling in step 3 evaporates off excess water. If insufficient water is evaporated off, the final soluble solids will be too low and the jam may not set.
- The jam should not be transported for at least 24 hours, to allow pectin to set.
- The level of pectin can be adjusted to give a softer or firmer set as required.
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