Foods that exist in the UK but not in the US

Blackcurrants are a mystery to me. When I first encountered them, I thought that maybe they had a different name in the US because blackcurrants are everywhere here and I've never seen them in the US. I am actually currently eating blackcurrant flavored yogurt. Well Wikipedia just informed me of the answer. Apparently,

"Blackcurrants were once popular in the United States as well, but became extremely rare in the 20th century after currant farming was banned in the early 1900s when blackcurrants, as a vector of white pine blister rust, were considered a threat to the U.S. logging industry"

WTF. That's definitely not the answer I was expecting, but pretty interesting. However, I'm not too bummed about the lack of this crop in America because I don't find the taste entirely appealing. I am though, shocked at the fact that they were banned in the US. Apparently they're still banned in a lot of states. CRAZY!