Fire roast or boil the Tomatoes (if boiling boil for 20 minutes after cutting the top portion and making 2-3 slits on the tomatoes so that it peels off easily and boil the whole dry Chillies too along with it. If roasting directly, roast in a fire ( gas stove or charcoal fire), in this case, soak the chili for an hour in hot water, so that the dry chilies soften up and it's easy to grind ).
Whatever you do peel the tomatoes before grinding.

Put everything in the mixer grinder and grind it into a fine paste. Adjust salt. Serve with Momo, Parathas, Pakodas, etc.