Add garlic and ginger to mixer bowl, chop for 3 sec/speed 8/MC on.
Add spring onion and chilli to mixer bowl, chop for 3 sec/speed 6/MC on.
Scrape mixer bowl down, add parsley. Chop for 5 sec/speed 6/MC on. Scrape mixer bowl down and if large chunks remain, chop for another 4 sec/speed 6/MC on.
Scrape mixer bowl down, add enough olive oil to cover mixture and balsamic vinegar, mix for 5 sec/speed 3/reverse/MC on.
At this point you can either choose to use 250 g butter, cubed for a flavour explosion or 500 g butter for a mild butter (you can also choose to take half of the mix out to use as a Spicy Balsamic Dip if you don't want to make 500 g flavoured butter)
Add cubed butter to mixer bowl, mix for 20 sec/speed 4/MC on or until combined. Scrape mixer bowl down and repeat if needed.
Either serve or roll tightly in baking paper and freeze to allow you to cut into pats of butter.