Use plastic gloves for this recipe preparation and save yourself a lot of grief later.
De-seed the chillies and place into the Thermomix bowl. Add the tomatoes.
Place garlic, shallots and EVOO into the Thermomix bowl and chop 5 sec/speed 6. Cook 5 min/Varoma/speed 1.
Add fish sauce and sugar and cook 25 min/Varoma/speed 1. Blend 20 sec/speed 8. Scrape bowl and repeat.
Add sesame oil, EVOO and sesame seeds and combine 10 sec/speed 4.
Pour into a sterilised jar and keep in the fridge between uses.