Using a medium large pot add the Macadamia oil and warm . Add the onion, garlic, lemon zest and soften. Add the cauliflower, Macadamias, stock and cream.
Bring the mixture to a boil, turn down and simmer till tender ( approx 20min). Add the lemon juice and puree with a stick blender ( I used my Vitamix for a very smooth finish).
Test the soup and add salt.
Chop up pancetta, nuts and chives and serve on top of the soup