Soak cashews in a bowl of water for at least 2 hours.
Strain and discard water from Thermomix bowl.
Place cauliflower florets into the Varoma dish, Fill up the Thermomix bowl to the 1 litre mark with water. Place Varoma on top and steam 18 min/Varoma/speed 3 or until cooked so they break easily with a fork.
Discard the water in Thermomix bowl.
Place cashews, cauliflower, 100gm additional water, lime juice and salt into the Thermomix bowl. Blend 5 min/speed 9 Scrape bowl and add EVOO, continue blending 2 min/speed 9 or until desired consistency is reached.
Use in place of sour cream in most dishes, (maybe not in a cheesecake though!)