In our survey of pre-modern recipes we noticed a pattern of combining honey and vinegar to wash or dress wounds and swellings, and this inspired us to focus on that combination in our analysis," said Dr. Erin Connelly, a researcher on the study. Today at Warwick University, Connelly and her team of researchers at the British National Health Service were looking to see if bacterial concentrations could be reduced when ensconced within the protections of a biofilm.