don't know if this is what your looking for mate but i have this recipe but iv never made it
50g mustard seeds crushed,50g freshly ground cumin seeds,25ml ground turmeric
50g garlic crushed,150ml white vinegar,75g granulated sugar,2 tsp salt
150ml mustard oil,20 small garlic cloves,450g fresh green chillies halved.
method
1) mix the mustard seeds, cumin, turmeric, crushed garlic, vinegar, sugar and salt in a sterilized jar or glass bowl cover and allow to rest for about 24 hours.
2) heat the mustard oil and gently fry the rested spice mixture for about 5 Min's add whole garlic cloves and fry for another 5 Min's.
3) add the halved green chillies and cook until tender but still green in colour this should take about 30 Min's on a low heat, cool thoroughly
4) pour into sterilized jar ensuring that the oil is evenly distributed if you are using more than 1 bottle. then leave to stand for 1 week before serving
hope this is what your looking for let me know how you get on if you try it