Ingredients
1 kg tomato chopped
1/2 bottle white vinegar
1/2kg sesame (til) oil
125 gm garlic peeled
125 gm green chillies
60 gm ginger
1/2 tbsp jeera (cumin seeds)
125 gm mustard seeds
60 gm red chilli powder
1 tsp fenugreek (methi) seeds
1/2 tsp turmeric powder
salt to taste

Method

Hand grind if possible, under a stone, the ingredients for best results. If not available use mixie.
Put the garlic, ginger, green chilli first. Add the vinegar and remaining spices, a little at a time while grinding, grind till coarse paste is made. Heat oil, add masala, a little at a time. Fry till brownish in colour.

Add tomatoes and salt. poring to boil. Cool and preserve in clean glass jar.