The recent avocado warning from the Food and Drug Administration couldn't have come at a worse time. While avocados are available year-round, we are heading into a popular time for them: February's Super Bowl, when more are consumed than at any other time.

And in the weeks ahead, you will start seeing them on sale a lot.

The report released by the FDA in December found that about one in five avocados tested positive on the outer skin (or peel) for Listeria monocytogenes, whose infection listeriosis can cause a variety of health issues, including nausea, vomiting and diarrhea. The bacteria was also found in less than one percent of avocado flesh. During the reporting period (2014-2016), they also found salmonella, but in less than one percent of avocados sample tested.

Why does this matter if you don't consume the skin?

The potential issue is that when you cut through the avocado's pebbly skin, bacteria could be transferred to the knife. And then the knife could contaminate the avocado flesh.

“Even if you plan to cut the rind or peel off the produce before eating, it is still important to wash it first so dirt and bacteria aren’t transferred from the knife onto the fruit,” the FDA warned.

The Center for Disease Control and Prevention estimates 1,600 people are sickened from listeriosis each year. Of those sickened, the CDC says about 260 people die.


Avocados ripen after they are picked, not on the tree. A ripe avocado will yield to gentle pressure when you push into it. The skin will be pebbly and purplish-black. Once ripe, you can store uncut avocados in the refrigerator for about three days. The skin of an unripe avocado will be hard and green. Buy these if you don’t plan on using them right away.


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Treat avocados them the same way you do melons: washing them under cool water before slicing into them. Because avocado skins are pebbly — as are some melons — use a vegetable brush to scrub them. Once scrubbed, pat them dry with paper towels. And always make sure you are preparing them on a clean work surface.


Once washed, hold the avocado in a clean dish towel. Insert the tip of a knife through the skin, flesh and to the pit/seed. Cut around the seed, rotating the avocado with one hand and holding the knife with the other. Once you’ve cut around the whole avocado, twist to separate it in half. At this point you can scoop out the flesh, slice or dice it.


Avocados are a darling fruit noted for their high good fat content — monounsaturated. This is the fat noted for helping to increase HDL (good) cholesterol and lower LDL (bad) cholesterol. Avocados are also a good fat source for those following a ketogenic diet.

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