Making buttercream using a little blender
If you only need a small quantity of buttercream, you can make it in one of those miniature blenders or a standard, ordinary blender. If you use a mixer, it might just vanish around the sides of the bowl.
First whizz butter until fluffy, then carefully add icing sugar and give it a good whizz, scraping the sides every so often. Add flavourings and whizz up again.