They’re alluding to the perception that they make (for example) 10,000 lbs of beans with 1 piece of pork. So when canned, the 9,999 of the cans won’t actually have any pork in them at all and the remaining one may or may not (it’s possible for all of the pork to cook away if it was a particularly fatty piece).
Anecdotally: I actually don’t recall ever getting a can of pork-n-beans that didn’t have at least one recognizable piece of pork in it, but it may just be that I never really paid attention to it.
It means “in really miniscule quantities so as to be indistinguishable from the rest of the product” just like homeopathic tinctures. In homeopathic “cures” they make tinctures and keep diluting them until they are indistinguishable from what they’re diluted in. I don’t know how common it is, but I use the phrase “homeopathic amount” quite a bit in this kind ot context.
Agreed. I’ve just been on a crazy legume kick this past month. I don’t know where it came from, but a few weeks ago I made lentis for lunch every day, usually as dal tadka or dal makhani. Sometimes I’ll use beans or a mix of legumes with that same recipe. Today, I found a copycat Heinz beans recipe online, and I made beans and toast with two over easy eggs for lunch. All these vegetarian, and I’m generally a huge meat-eater. Beans are just so satisfying. And great fiber content!