Step 1

Add oil to a heavy bottomed sauce pan and place on medium-high heat.

Step 2

Add onions and sautee for 3-5 minutes or until lightly caramelized and soft

Step 3

Add tomatoes, cider vinegar, brown sugar, ginger, chilli flakes and salt and bring to a boil.

Step 4

Reduce heat and let simmer for about 30 minutes or until tomatoes have softened and the ingredients have thickened to a jammy texture.

Step 5

Let cool slightly and then transfer to a small glass jar. See with a lid and store in the fridge for up to 3 weeks.