If you are from a country or area that doesn’t readily have pasteurized eggs, you can pasteurize them yourself with a sous vide bath. I recommend using a plastic bag, as the yolks do tend to soak up some of the water if you put them directly in the bath
So I’m very torn on this cocktail. The sake definitely comes through, enough that that you want to use good sake. However, any sake that I would deem good enough to use I would want to drink on its own. It’s a conundrum.