heat oil in pan
Add garlic until crispy and brown, remove with slotted spoon and drain on paper towel
Repeat as above with shallots and then with chillies
Put chillies, garlic and shallots into mixer/blender.
Add 30ml of frying oil and blend into paste
Pour mixture into a small pan - cook for 2 mins
Add all remaining ingredients and simmer gently, mixing regularly, until you have a thick jam-like sauce (around 15 mins)
Don't let it burn
Store in air tight container in fridge for up to a month (oil will separate but no need to remove)