I'm not a pro. What are the ramifications on stuff I get in the grocery store? What is subject to nitrates?
Ofc there's the issue other commenters have pointed out: the FDA requires nitrates in a lot of meat products.
https://www.amazon.com/Whole30-Approved-Protein-Calories-Ori...
"Celery has a very high concentration of natural nitrate, and treating celery juice with a bacterial culture produces nitrite. The concentrated juice can then be used to produce “no nitrite added” processed meat."
https://www.mcgill.ca/oss/article/food/celery-juice-viable-a...