People always freak out about eating raw cookie dough for fear of salmonella due to the raw eggs.
Yet raw egg whites have been a common ingredient in fancy cocktails for ages and its never been questioned or regarded as dangerous.
What gives?
In: Biology
Hello! I’m a food scientist, and to address your concern about the cookie dough specifically, cookie dough is labeled with warnings not necessarily because of the eggs (although there will always be concerns with raw poultry products and salmonella), but because of the flour.
Think of it this way. Flour is a processed grain that is essentially taken from the field and ground into flour by mechanical means. While there are other steps sometimes involved (whole wheat flour vs. regular flour, cake flour vs. regular flour all involve different processing steps), the flour is not taken through enough steps during processing that can guarantee pathogens of concern are killed. So, bacteria like salmonella, E. coli, etc. can be introduced in the field or during processing, meaning it can end up ground right in the final flour.
However, this does not mean you should be scared of flour now. Flour is not a product typically eaten raw (ie. You don’t eat flour with a spoon), and almost everything you make with it will go through a significant heat kill step (baking, cooking, etc.), AKA you are getting rid of the bacteria.
This leads to why manufacturers put the warning on cookie dough. People enjoy raw cookie dough, so they are at risk of eating raw flour.
Yes, salmonella may exist in the cookie dough. Will it hurt you? No, not likely unless you are a person with a weakened immune system susceptible to foodborne illness (meaning it essentially takes less bacteria to make you sick because your body is not as well equipped to protect itself), or the cookie dough was temperature abused (meaning the cookie dough was not properly refrigerated, leading the cookie dough reaching an internal temperature that allows the bacteria to multiply more quickly, and more bacteria=more of a chance at getting sick).
EDIT: Here’s a succinct source from the FDA for those interested in this cookie dough info:
[FDA Cookie Dough Guidance ](https://www.fda.gov/consumers/consumer-updates/raw-doughs-raw-deal-and-could-make-you-sick)
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