Rub onions, tomatoes, garlic bulb, chillies, capsicum with some oil.
Place in ovenproof dish, broil in preheated oven till soft at 200o C for 5 minutes.
Peel off garlic skins, destalk chillies.
Add all other ingredients except oil.
Run in small blender to get a smooth paste.
Heat oil, add paste, stirfry for 2-3 minutes.
Bottle or use as required.
Keep refrigerated for further use.
Serve as a dipping sauce for veggie fingers, crudites, soup sticks, etc.
Note: Make sure to grill or broil all the veggies used to soften them before blending. This is where the secret flavour of namprik (vegetarian version) likes.