Add the vegetable oil, salt, and rum, then add the vinegar to cover all. (fieryfoodscentral.com)
They are called buttermilk because if you didn't know, you can make buttermilk out of regular milk by adding vinegar to it, which in turn makes it sour. (mynaturalfamily.com)
When adding the vinegar to the broth, will this pull unhealthy metals from the stainless steel pot into the broth? (westonaprice.org)