Replacement whisks for the Nespresso Aeroccino milk frothers can be purchased directly from the Nespresso website. It’s called Nespresso Aeroccino 3 2-in-1 whisk. At the time of this post shipping was free.
I ordered one from the Australian website and received it after a week which is pretty quick considering the covid situation.
It is now a two-in-one whisk as opposed to two separate whisks that came with the Aeroccino milk frothers in the past. I have one of the early Aeroccino models and the replacement whisk works perfectly with it.
By default the whisk is used to heat up milk and create froth for cappuccinos. For lattes where you want a milk with less foam, just remove the spring from the whisk.
The new whisk has a stem which makes it a lot easier to place in and remove from the milk frother.
In my testings with the cappuccino spring on I found that I got a smoother foam with the new whisk than with the original whisk. Now I’m only using the new whisk to prepare the milk for my cappuccinos.