Peel and chop the avocados and banana and freeze in a ziploc bag at least overnight.
Place frozen fruit into TM bowl and mill 10 sec/speed 10. Scrape down sides of bowl and lid.
Add all remaining ingredients excpet chocolate and blend 20 sec/speed 8.
Insert Butterfly. Whip ice cream for approx 1 min/Butterfly/speed 4.
Add chocolate just at the end and stir through without the Butterfly.
Either serve immediately as soft serve or return to the freezer for no longer than an hour. This becomes extremely hard if left in the freezer for too long. Best made on the day of eating.