You can make great tasting butter at home just by putting double cream in a food processor and running it till it turns into butter. It's a good experiment for the kids to watch, too!
You can also do this in the mixer. I use our Kenwood and the K-beater does an excellent job in about the same time. Don't be afraid to run it fairly fast but BE AWARE of the fact that you may get a bit of splash if you try doubling the recipe. The best way I've found for draining is to line a colander with butter muslin (wonder why they call it that) and tip the separated cream into it. Save the buttermilk. It's good in loads of things including the home-made bread you'll spread the butter on! - 29 Oct 2012
A little addition to the above. If you want a more "spready" butter - one that will spread more-or-less from the 'fridge, incorporate some olive oil after making the butter. - 03 Nov 2012
Thanks so much for sharing this!I never realised how easy making butter could be,its just lovely! - 18 Apr 2012