update I could smuggle two small bottles in my big suitcase.
The rice alcohol with a snake in it is being sold in most souvenir shops, I finally bought it today on my last day in Vietnam because it’s not expensive and a friend had told me it’s a local thing and it’d be cool if I brought some back with me. I read online that it is legal to import rice alcohol with a snake inside in small quantities especially since it’s just a rat snake that’s been flattened so that it looks like a cobra to the United States. I’m tempted to assume that the U.S. would have a more strict policy than Europe so I’m good, but still not sure. If anyone knows more about this please share. Thanks