Add spring onion, mint and garlic to mixer bowl. Chop for 3 sec/speed 9/MC on. Scrape bowl down and repeat once.
Add remaining ingredients to mixer bowl (except for oil), blend for 5 sec/speed 6/MC on. Scrape bowl down and repeat once.
Put mixture on a plate (spread out) and refrigerate for 20 mins to firm up.
Heat oil on a non stick frying pan to medium/high heat. Roll mixture into golf sized balls and flatten them slightly... fry on both sides until golden brown. I recommend you dont touch them until they are well browned, because the mixture is a little temperamental.
If your mixture is too wet to fry, you can bake them in an oven at 180°C or 350°F, fan-forced for 30-40 mins turning half way through if required.
Cool well before refrigerating.