Place lemon zest and sugar into the Thermomix bowl and mill 20 sec/speed 10.
Add juice and blend 2 min/speed 8 or until all the sugar is dissolved
Add half the milk and combine 10 sec/speed 4. Add remaining milk and lemon oil and blend 10 sec/speed 10.
Pour into Ice Cream churner and churn until frozen.
Thermomix Method; If you don't have a churner yet, freeze this mix in an ice cube tray, and when frozen, blend in your Thermomix for up to 1 min/speed 10 with the aid of your Thermomix spatula.
This will be delicious with just a small drizzle of amazing EVOO on top and a few salt flakes.