Onion Jam - cooking recipe

Ingredients

1/4 cup olive oil
6 onions, medium, sliced thinly
1 pinch sea salt
1 tablespoon balsamic vinegar
1/4 cup port wine
1 sprig fresh thyme
1/2 cup muscovado sugar
1 teaspoon mustard seeds
1/2 teaspoon red pepper flakes
1/4 cup tomatoes, finely chopped

Preparation

Heat oil in heavy frying pan, then add onions & saute untils slightly brown.
Season with salt, then reduce heat & continue to cook, stirring constantly, until caramelized & tender.
Add rest of ingredients EXCEPT the tomato, & cook on low heat for 30 minutes, stirring occasionally.
Add tomato & cook 15 more minutes.
Remove from heat & let cool.
Store in a jar in the refrigerator for up to 2 weeks.