I created this rich dressing to serve with cauliflower-broccoli tabbouleh, but it goes well with all roasted vegetables and salads too.
Put all the ingredients, except the coriander, parsley and mint, in a blender (or a large jug if using a stick blender).
Blend until you have a sauce that is almost smooth. Taste and if necessary add more seasoning, sugar, lemon, or balsamic until it's to your liking. If it's a little thick add more olive oil or a splash of water.
Add the coriander, parsley, and mint and whizz briefly to combine without completely blending them into the sauce.
Transfer to a covered container in the fridge until ready to use. Will keep 2-3 days.