olive oil

½ 
small red onion, finely diced

1 tsp
 grated ginger

½ tsp
 cumin seeds

1 tsp 
ground coriander seeds

1 tbsp 
sweet paprika

1 tsp
 chilli powder

½ 
lemon, finely chopped

3 tbs apple cider vinegar or white wine vinegar

¼ cup lemon juice

2 tbsp
 brown sugar

1 can 
crushed tomatoes

2 tbsp worcestershire sauce

soy sauce

1 tsp sesame oil

pinch of salt