What’s the green sheen on bacon? © Getty Images

What’s the green sheen on bacon?

Hmmm! Delicious shiny green bacon.

Asked by: Rob Baynes, Lutterworth

Advertisement

It is formed by a chemical reaction between the sodium nitrite that is used to cure the bacon, and myoglobin, which is found in muscle tissue. This reaction was identified in 2012 but we still don’t know whether the green chemical is harmful or not in the long term. The nitrites in processed meat are already linked to heart disease, though.


Advertisement

Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts.