In a large non-reactive pot heat oil and sauté onions.
Add brown sugar, when sugar has dissolved add all other ingredients.
Bring to a gentle boil then simmer at a low heat until jam has reduced and thickened, about 1 1/2 – 2 hours.
Pour into sterilised jars with funnel to ensure jar rims are clean. seal.
Hints and Tips
To test if the jam is ready, place 1 teaspoon of the jam on a chilled saucer and place in the freezer for 1-2 minutes or until cooled to room temperature. Lightly push the jam with your finger. If the surface wrinkles, it’s ready.
To sterilise glass jars, wash the jar and lid in warm soapy water and rinse. Transfer to a baking tray lined with baking paper and place in oven preheated to 100°C until dry. Use straight from the oven.