What is cultured butter and how do you make it? | Kitchen Aide

‘Cultured’ is just a swanky way of saying ‘going a bit sour’, and it’s so easy to make, you can almost do it by accidentEvery modern British restaurant these days serves “cultured butter” with its bread. What is it, exactly? And how hard is to make at home?
Róisín, RichmondAs the name implies, cultured butter is essentially butter to which some form of live culture has been added. That could take the form of anything from buttermilk to yogh