I've started to make my own butter using store bought whipped cream.
I have a new cuisinar from christmas and I've been using it.
I place half a carton of whipped cream in the cuisinar bowl and I whip it as fast as possible without splashing too much and making a mess.
it turns to whipped cream in mere minutes, but I add salt instead of sugar to my whipped cream.
whip it more, until the butter clumps up around the mixing head and there is remaining liquid called buttermilk which can also be used in making buttermilk biscuits.
so I've commited to always making my own butter, which is more wholesome and I'm assuming better for you in the end.