Anyone knows how to make Buttermilk?

I want to make a cake today and it requires Buttermilk but I don't have any :(

01
11/03/14
thanks!
1
11/03/14
Your welcome, I had to make that too.
1
11/04/14
I found cultured buttermilk is it the same as regular buttermilk?
0
11/04/14
I found this site explains the difference some.
http://www.slate.com/articles/life/food/2012/05/h…
1
    11/10/14
    I'm sure you got your question answered by now.. cup of milk, tablespoon of lemon juice.
    0