I like your idea of reversing the question. On their own I’m not big on sour cream or mayonnaise, but either of them mixed together with the right seasonings or sometimes even together with some seasoning and I can’t get enough. Mayo is nasty, but a garlic aioli? Fricken great. Plain sour cream? A tad on a baked potato is fine, but a chipotle lime crema? I might lick that up off the floor…
I feel like Europe would offer way better finds than the US. I’ve only ever used one to locate electric lines, but i definitely can’t imagine discovering any of your impressive finds in the USA especially where I’m at in the Midwest