The Coleman bacon doesn't list ingredients. But the Applegate bacon lists celery powder because that is a source of nitrates. See https://en.wikipedia.org/wiki/Celery_powder
Found an image of coleman bacon ingredients list, celery powder is on it as well.
The Coleman one is the one I usually get these days, I used to get the Applegate.
I don't know much about either brand but there are good reasons to buy fancy bacon instead of Smithfield and Hormel, just because of the quality and ethics of the livestock inputs. But nitrites aren't one of those reasons.
Applegate is notoriously celery-extract-cured. Same chemical endpoints in your body as industrially produced nitrite powder.
There's a really easy way to tell: does it taste like American bacon? Then: nitrites.
Celery powder / extract / etc. are nitrites.
I just learned to pickle canned beets to have in salads, and they work really well as a salad add in.
Counterpoint: I fucking love beets. (and bacon. but not together. yuck)
A burger with the lot here in Australia will have beets and bacon. And an egg, probably pineapple too. Lettuce, tomato, cheese. hmm.. I know what I want for lunch today.
I could understand the beetroot when I was Down Under, but the pineapple just had me go "?" similarly to when I was served eggs, pasta, and mushrooms for breakfast.
For bacon, what do you think of these?
Applegate:
https://www.raleys.com/product/10400628/applegate-naturals-h...
Coleman:
https://www.raleys.com/product/103101180/coleman-natural-bac...