Money Cinco de Mayo: Before making guac for a party, the FDA has some advice for you December 21, 2018May 5, 2019Zlati Meyer, USA TODAYComments Off on Cinco de Mayo: Before making guac for a party, the FDA has some advice for you The concern is that when you cut into an avocado, the knife could bring pathogens on the peel to the edible fleshy part.