Take tomatoes, green chillies and garlic. Make a "+" line on the tomatoes for better cooking.
To begin with start charring the tomatoes over the flame using a roasting net. You can even pierce a stick through the tomato and roast.
Keep flipping the tomatoes often until they are completely roasted and soft.
Next roast the green chillies.
Roast the garlic cloves as well.
Peel the tomatoes once the excess heat is reduced.
Peel the garlic as well.
Roughly chop them and mash them. You can use a hand masher or a food processor or a chopped or a mixer grinder.
I have used mixer grinder and used the pulse mode. Make sure you don't grind it into a fine paste.
Transfer the chutney into a bowl. Add in salt as per your taste.
Add in coriander leaves.
Add in a tsp of oil.
Mix everything well and serve it with either rice or chapati or roti.