From the article, what is available in SF is nothing like the phenom in the UK. It's not the fast-food stuff or the Japanese restaurants --it's a spice/flavor

From the article, what is available in SF is nothing like the phenom in the UK. It's not the fast-food stuff or the Japanese restaurants --it's a spice/flavor added to everything, soon coming to soda pop. I think it's more like if the Korean BBQ stuff were 100x what it is in the US plus the halapeno flavor sprinkled on everything --or, in other parts if the US dill-pickle flavoring on things. In essence they out katsu-curry the Japanese in Japan because in Japan they have many more flavors to pick from, so aren't stuck on one.